Effect of Magnesium on the Strength, Stiffness and Toughness of Nodular Cast Iron

2020 ◽  
Vol 991 ◽  
pp. 17-23
Author(s):  
Agung Setyo Darmawan ◽  
Pramuko Ilmu Purboputro ◽  
Agus Yulianto ◽  
Agus Dwi Anggono ◽  
Wijianto ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Cast Iron ◽  
Yield Strength ◽  
Tensile Test ◽  
Impact Test ◽  
Nodular Cast Iron ◽  
Ferrite Matrix ◽  
Strength And Stiffness ◽  
The Impact

Nodular cast iron is a type of cast iron with spheroid graphite surrounded by ferrite matrix and / or pearlite. The size of the graphite and its matrix affects the mechanical properties of the cast iron. This research was conducted to investigate the effect of Magnesium composition on strength, stiffness and toughness of nodular cast iron. Magnesium addition is performed by adding FeSiMg alloys. After that, the composition of magnesium was investigated by using spectrometry. Then tensile test was conducted to obtain the yield strength, tensile strength and modulus of elasticity. Further, impact test was performed to determine the impact energy needed to break the material. The result showed an increase of yield strength, tensile strength and stiffness and a decrease of toughness.

Statistical Evaluation Tensile Properties of High-Density Polyethylenes

2012 ◽  
Vol 445 ◽  
pp. 213-218 ◽  
Author(s):  
Ahmet Koyun ◽  
Baris Koksal ◽  
Esma Ahlatcioglu ◽  
A. Binnaz Hazar Yoruc
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Yield Strength ◽  
Tensile Test ◽  
Statistical Evaluation ◽  
Test Results ◽  
Plastic Materials ◽  
Service Conditions ◽  
End Use ◽  
Chain Lengths

The mechanical properties, among all the properties of plastic materials, are often the most important properties because virtually all service conditions and the majority of end-use applications involve some degree of mechanical loading [1]. In the present work three different commercial polyethylene materials are tensile tested at four or five different tensile rates and two or three temperatures. Tensile test results against tensile rate include stress at 0.5 % elongation, tensile strength, yield strength, modulus of elasticity, elongation at yield and % elongation are determined. It is concluded that the structure, chain lengths and branching rates of polymer matrix significantly effected tensile test curve characteristic.

Microstructure and Properties of Powder-Forged Steel

2012 ◽  
Vol 602-604 ◽  
pp. 448-451
Author(s):  
Biao Guo ◽  
Sui Cai Zhang ◽  
Chuan Shui Sun ◽  
Chang Chun Ge
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Powder Metallurgy ◽  
Ultimate Tensile Strength ◽  
Impact Toughness ◽  
Yield Strength ◽  
Fracture Behavior ◽  
Impact Test ◽  
Fracture Change ◽  
Reduction In Area

Sintered and forged powder metallurgy (P/M) steels were subjected to tensile, hardness and impact test, in order to understand the influence of the microstructure on the mechanical properties and fracture behavior. Ultimate tensile strength, yield strength, elongation, reduction in area, hardness and impact toughness all increase with a decrease in porosity. With the increase of density, the mode of fracture change from pure ductile in sintered necks of the material to complete brittle from fully dense pearlitic grains.

Microstructure and Mechanical Properties of Mg96Y3Zn1 Alloy Processed by Equal Channel Angular Pressing

2011 ◽  
Vol 682 ◽  
pp. 49-54
Author(s):  
Bin Chen ◽  
Chen Lu ◽  
Dong Liang Lin ◽  
Xiao Qin Zeng
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Tensile Strength ◽  
Ultimate Tensile Strength ◽  
Yield Strength ◽  
Tensile Test ◽  
Equal Channel Angular Pressing ◽  
Ultrafine Grains ◽  
Angular Pressing ◽  
Average Grain Size

The Mg96Y3Zn1 alloy processed by equal channel angular pressing has been investigated. It was found that the Mg96Y3Zn1 alloy processed by ECAP obtained ultrafine grains and exhibits excellent mechanical properties. After ECAP, the average grain size of Mg96Y3Zn1 alloy refined to about 400 nm. The highest strengths with yield strength of 381.45MPa and ultimate tensile strength of 438.33MPa were obtained after 2 passes at 623K. It was found that cracks were preferentially initiated and propagated in the interior of X-phase during the tensile test. As a result, the elongation of alloy is decreased with pass number increasing.

scholarly journals ANALISA KEKUATAN WELDING REPAIR BAJA AISI 420 DENGAN METODA GMAW

2019 ◽  
Vol 18 (3) ◽  
pp. 297-306
Author(s):  
Cecep Slamet Abadi ◽  
Rosidi Rosidi ◽  
Idrus Assagaf
Keyword(s):  
Tensile Strength ◽  
Tensile Test ◽  
Test Object ◽  
Impact Test ◽  
Welding Process ◽  
Charpy Impact ◽  
Hardness Test ◽  
Test Material ◽  
Aisi 420 ◽  
The Impact

Welding technology is used because besides being easy to use, it can also reduce costs so it is cheaper. Especially for welding repair. From the welding repair the extent to which the strength of GMAW welds can repair components from the molded plastic mold room made of AISI 420 stainless steel. Repair of the print room components using deposit welding is tested using tensile strength and hardness as realization of resistance when holding the rate of liquid plastic entering the print room by 25 to 40 MPa, depending on the plastic viscosity, the precision of the mold and the filling level of the print room. Deposition welding method as a welding repair can affect a procedure to be able to produce a component that is safe and capable of being used in accordance with the provisions. The welding process used is reverse polarity GMAW DC with 125 A current and ER 70 S welding wire diameter 1.2 mm. Test material AISI 420. Tests carried out were tensile test, impact test and hardness test in weld metal, HAZ and base metal. From the Charpy impact test and tensile test obtained the value of welding strength which is close to the strength of the complete object, which is equal to 65%. The energy absorbed by the impact test object with GMAW welding is 5.4 Joule while for the whole test object is 8.1 Joule. The welding tensile strength is 520 MPa compared to the tensile tensile strength of 820 MPa.

Effects of Zn on Mechanical Properties of MZK60 Wrought Alloy

2007 ◽  
Vol 546-549 ◽  
pp. 391-394
Author(s):  
Ding Fei Zhang ◽  
Li Ping Ren ◽  
Hong Ju Zhang ◽  
Wei Yuang
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Magnesium Alloy ◽  
Yield Strength ◽  
Tensile Test ◽  
Optical Microscopy ◽  
Magnesium Alloys ◽  
Room Temperature ◽  
Zn Addition ◽  
Zn Content

Developing new alloys and techniques is important for the applications of magnesium alloy products. The greatest challenge in the area is to exploit new wrought magnesium alloys[1]. In this paper, the effects of Zn addition on the microstructures and mechanical properties of the MZK60 wrought alloy which is modified from ZK60 have been investigated. The microstructures of these alloys at various states were evaluated by optical microscopy. The mechanical properties at room temperature of these alloys were studied systematically by tensile test. Experimental results indicated that increasing Zn content to 7~10%wt is able to get not only higher tensile strength and yield strength, but also higher elongation.

Microstructures and Mechanical Properties of High Strength Low Carbon Bainitic Steel

2015 ◽  
Vol 817 ◽  
pp. 257-262 ◽  
Author(s):  
Xiao Long Yang ◽  
Yun Bo Xu ◽  
Xiao Dong Tan ◽  
Yong Mei Yu ◽  
Di Wu
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Yield Strength ◽  
Impact Energy ◽  
Bainitic Steel ◽  
Cooling Temperature ◽  
Fast Cooling ◽  
Microstructures And Mechanical Properties ◽  
The Impact ◽  
Strength And Toughness

Based on TMCP and UFC technology, the microstructures and mechanical properties of 0.05% C bainitic steel were studied in this paper. The bainite morphology and precipitation within bainite lath were observed by SEM and TEM, and the mechanical properties of bainitic steel were measured by tensile and impact test. The results showed that the yield and tensile strengths of steel were 713 MPa and 891 MPa respectively, and the elongation was 15.8% with impact energy of 95J at the temperature of-20°C as the final cooling temperature in hot rolling of 550°C. For comparison, the steel obtained the yield strength of 725 MPa, tensile strength of 930 MPa and elongation of 18% as the final cooling temperature of 450°C. However, the impact energy of steel was 195J at the temperature of-20°C. While at the same final cooling temperature of 450°C, the fast cooling-holding temperature-fast cooling was applied to experimental steel with a faster cooling rate of 50°C/s, hence the steel acquired the yield strength of 845 MPa, tensile strength of 1037 MPa, and elongation of 15.5% with impact energy of 168J at the temperature of-20°C. The strength and toughness of 0.05%C bainitic steel is related to the bainite morphology and precipitation distribution. Hence, the strength and toughness can be improved by control the different cooling processes for adjusting the content of lath bainite, distribution of granular bainite and precipitation.

Study on Preparation and Properties of Resource-Saving Nitrogenous Stainless Steel

2020 ◽  
Vol 996 ◽  
pp. 191-199
Author(s):  
Qing Bao Liu ◽  
Zhi You Hu ◽  
Xiang Jun Liu ◽  
Chang Qiao Yang
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Stainless Steel ◽  
Yield Strength ◽  
Nitrogen Content ◽  
Nickel Content ◽  
Vacuum Induction Furnace ◽  
Strength Increase ◽  
Rockwell Hardness ◽  
The Impact

In order to alleviate the shortage of global nickel resources, it is imperative to develop low nickel stainless steel. This paper presents a novel approach based on increasing nitrogen and reducing nickel for smelting economical stainless steel. Taking 06Cr19Ni10 stainless steel as the object, the test steels with different nitrogen and nickel content were smelted using vacuum induction furnace (ZG-0.01) under the laboratory conditions, and the effects of alloy content on microstructures, mechanical properties and corrosion properties of the economical stainless steel were investigated. The results show that the microstructure of the tested steel which nitrogen content 0~0.28% and nickel content 5.98~9.63% is still the single austenitic, and the grain size decreases as the nitrogen content increases. Nitrogen deteriorates the impact toughness of the tested steel, and the room temperature impact absorption energy is reduced from 267 J at the nitrogen content of 0 to 228 J at nitrogen content of 0.28%. Rockwell hardness, tensile strength and yield strength increase with the increase of nitrogen content. When the nitrogen content is 0.28%, the optimum mechanical properties of 06Cr19Ni10 steel are obtained. The Rockwell hardness is 95.4 HRB, the tensile strength is 814 MPa, the yield strength is 437 MPa, and the elongation after fracture is 52.5%. The degree of intergranular corrosion of the tested steel is reduced significantly with the increase of nitrogen content, from 0.023 μm to 0.008 μm. The experimental data prove that the composition design concept of increasing nitrogen and reducing nickel is feasible for smelting economical stainless steel.

scholarly journals The Effect of Treatment of Coconut Fiber with Liquid Smoke on Mechanical Properties of Composite

2021 ◽  
Vol 328 ◽  
pp. 07010
Author(s):  
M Mukhlis ◽  
Witono Hardi ◽  
Rulan Mustafa
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Impact Strength ◽  
Impact Test ◽  
Single Fiber ◽  
Test Machine ◽  
Coconut Fiber ◽  
Liquid Smoke ◽  
Effect Of Treatment ◽  
The Impact

This study aims to determine the effect of liquid smoke treatment on the tensile strength of the single fiber and Coconut fiber (CF) Reinforced Composite. The research method is Immersion the fiber with liquid smoke and heating. First treatment, CF was immersed in liquid smoke for 1, 2, and 3 hours, then dried for 1 hour at a temperature of 40 degrees Celsius. Next, the single fiber tensile test was carried out with the Universal Impact Test Machine and composite impact strength. The results showed that the tensile strength of single fiber TP, P1J, P2J, and P3J of 51.357 MPa, 79.655 MPa, 48.187 MPa, and 58.117 MPa. While the CF composite impact test TP, P1J, P2J, and P3J of 0.514 KJ/m2, 1.385 KJ/m2, 1,085 KJ/m2, and 2,128 KJ/m2. The liquid smoke immersion can increase the tensile strength of single fibers, where 1-hour immersion has the greatest value. In contrast, the impact strength of the CF composites increased at 3 hours, the largest immersion value. The results showed that the fiber soaked in liquid smoke could be an alternative to improve the mechanical properties of CF.

The Effect of Heat Treatment of Gray and Nodular Cast Iron with Ferrite Matrix on Mechanical Properties and Corrosion Rate Compared with Medium Carbon Steel

2014 ◽  
Vol 936 ◽  
pp. 1158-1162 ◽  
Author(s):  
Mohamed A. Gebril ◽  
M.S. Aldlemey ◽  
Farag I. Haider
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Cast Iron ◽  
Corrosion Rate ◽  
Treatment Process ◽  
Nodular Cast Iron ◽  
Ferrite Matrix ◽  
Medium Carbon Steel ◽  
Heat Treatment Process ◽  
Medium Carbon

In this work, the influence of heat treatment process and quenching in different quenchant media of medium carbon steel, gray and nodular cast iron with ferrite matrix on the hardness, ductility and corrosion rate of has been investigated. During this type of operations, the specimens were Austenizing at 900°C for one hour. Therefore, the specimens were quenched in different kind of oil as quenched medium (oil 20-50, oil 40, oil 90, and water as reference). The hardness , impact energy to measure the ductility, corrosion rate and microstructures were studied. From result of steel 0.47% carbon was clear increasing in hardness and decreasing in ductility with close varying values in oil quenchant kind comparing with as received specimen and water quenched one, corrosion rate decreased with heat treatment and quenching process due to formation of single face instead of double phase before heat treatment process which created galvanic cell. For gray and nodular cast iron it is noticeable that no changing in microstructure within heating for one hour at 900°C because the matrix in both cast iron types is ferrite, therefore no changing in mechanical properties under heat treatment process with time of one hour which is not sufficient to decomposition of graphite, but with comparison the hardness of gray cast iron is more than nodular one due to distribution of graphite flacks which increase the hardness and decrease the ductility as well as increasesing the corrosion rate compared with nodular cast iron. Microstructure of both types of cast iron have been studied after subjected the specimens to heat treatment at 1000°C and for 10 hours, the microstructures shown clear diffusion of some carbon in ferrite matrix around the graphite phase and under quenched some of martensite formed.

Microstructures and Mechanical Properties of Troostite Nodular Cast Iron by Heat Treatment

2011 ◽  
Vol 480-481 ◽  
pp. 207-210
Author(s):  
Ke Gao Liu ◽  
Ai Min Xu
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Tensile Strength ◽  
Cast Iron ◽  
Treatment Process ◽  
Interlamellar Spacing ◽  
Nodular Cast Iron ◽  
Isothermal Treatment ◽  
Heat Treatment Process ◽  
Controlled Cooling

A troostite nodular cast iron was obtained by a heat treatment process of controlled cooling, reheating-up and isothermal treatment. Experimental results show that the troostite substrate demonstrates an interlamellar spacing below 100 nm. The supercooling condition in this specific heat treatment process is key to the formation of troostite. The mechanical properties are excellent, with tensile strength of 905.5~1029.5 MPa, hardness of 30.8~32.8 HRC, and elongation of 3.1~4.0 %.

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