scholarly journals Study of Mechanical Properties and Microstructure of Mercedes-Benz and Local Radiator Material

2020 ◽  
Vol 24 (3) ◽  
pp. 185
Author(s):  
Usman Sudjadi ◽  
Rahmad Jayadiningrat ◽  
Erwan Hermawan ◽  
Agus Jamaludin
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Chemical Composition ◽  
Grain Boundaries ◽  
Treatment Process ◽  
Optical Microscope ◽  
Heat Treatment Process ◽  
Test Results ◽  
Binding Material ◽  
The Matrix

            Indonesia has the capability to produced local products such as vehicle radiators. Many studied were carried out to characterize the radiator material. But it still needs to compare local products and imported products. This study carried mechanical properties and microstructure analysis for Marcedes Benz's core radiator and local radiator. The tools used in this study are microhardness tools, optical microscopes, and XRF. The result shows that the Mercedes-Benz radiator binding material before the heat treatment process, using an optical microscope shows the invisible results of a collection of atoms and the matrix and grain boundaries. On local radiator material, Not yet seen the collection of atoms and matrix and grain boundaries. White grains of Mercedes Benz radiator material is more abundant than local radiator materials. Chemical composition test results are; local radiator material content is dominated by three elements Ca (26.3%), Zn (44.4%) and Cu (13.9%) Cu (2.48%), Fe (45.15%), and Mn (44.88%). The German Mercedes-Benz element contents are; Fe (28.7), Mn (27.5), Ca (39.2). The hardness of the Mercedes-Benz radiator before heating is 43.4 HV, after being heated 39.2 HV. The hardness local radiator material before heating 43.5 HV and after heating 38.2 HV.

scholarly journals PENGARUH TEMPERATUR ANELING TERHADAP KEKERASAN DAN KEKUATAN PIPA TEMBAGA AC BEKAS

INFO-TEKNIK ◽  
2020 ◽  
Vol 20 (2) ◽  
pp. 193
Author(s):  
R. N. Akhsanu Takwim ◽  
Kris Witono ◽  
Pondi Udianto
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Tensile Strength ◽  
Air Conditioning ◽  
Treatment Process ◽  
Heat Treatment Process ◽  
Test Results ◽  
Proportional Limit ◽  
Limit Stress ◽  
Proportional Limit Stress

During the installation process, copper pipes for air conditioning will experience a very large deformation due to straightening and bending following the installation path. Hardening strains occur that result in changes in mechanical properties in this case decreases ductility making it difficult to do the connecting process with flaring. Studies need to be carried out to restore the mechanical properties of copper pipes that have been used, including the heat treatment process on copper pipes, so that used copper pipes have a better benefit value than having to be recycled. The temperature of the heat treatment is varied from 400oC, 500 oC and 600 oC. Tensile test results show that at annealed temperature of 400 oC has the highest tensile strength of 125.81 N / mm2 and proportional limit stress of 40.52 N / mm2. Whereas in the microhardness test, the highest hardness occurs also at annealed temperature of 400 oC which is equal to 50.8 HV.

scholarly journals The Influence of Annealing and Normalizing Processes on the Mechanical Properties and Chemical Composition of Carbon Steel ASTM A285Gr.C

2020 ◽  
Vol 8 (5) ◽  
pp. 4928-4933
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Chemical Composition ◽  
Carbon Steel ◽  
Treatment Process ◽  
Annealing Process ◽  
Heat Treatment Process ◽  
American Society ◽  
Metallurgical Processes ◽  
Material Standard

Paper Carbon steel ASTM A285 Grade C it’s easy to use and has all the material properties that are suitable for many purposes. One of the most metallurgical processes is heat treatment. Heat treatment on carbon steel is to improve ductility, toughness, strength, hardness and tensile strength and to relieve internal stress developed in the material. This paper describes the effect of rising temperature change on the mechanical properties of specimens. Two important processes of heat treatment are achieved in this paper; First heat treatment process is "Annealing" that involves heating specimens gradually in a furnace above several 723 °C and then soaking it in the furnace and then cooled inside the furnace. "Normalizing" is a second process that also involves heating the specimens gradually in a furnace above several 723 °C and soaking it in the furnace followed by cooled in the air. The specimen prepared according to ASTM (American Society for Testing and Material) standard. With increasing the temperature of the annealing process the strength of the specimens is decreased until it reached around 350 MPa at 1000 °C. Through the chemical composition of the specimen after the heat treatment process and compared with nominal compositions observed that the specimens loosed elements.

scholarly journals Determination of Critical Transformation Temperatures for the Optimisation of Spring Steel Heat Treatment Processes

Metals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1014
Author(s):  
Velaphi Jeffrey Matjeke ◽  
Josias Willem van der Merwe ◽  
Nontuthuzelo Lindokuhle Vithi
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Treatment Process ◽  
Thermal Transformation ◽  
Optical Microscope ◽  
Spring Steel ◽  
Heat Treatment Process ◽  
Cooling Rates ◽  
Transformation Temperatures

Bogie spring performance can be improved by using the exact heat treatment process parameters. The purpose of the study is to determine the critical transformation temperatures and investigate the effect of the cooling rates on microstructural and mechanical properties. The precise determination of the required cooling rates for the particular grade of steel is important in order to optimise the heat treatment process of heavy-duty compression helical spring manufacturing. A traditional heat treatment system for the manufacture of hot coiled springs requires heating the steel to homogenize austenite; then, it is decomposed to martensite by rapid cooling. By analyzing the transition properties by heating and differing cooling rates, this analysis examines the thermal behaviour of high strength spring steel. Using the dilatometer and differential scanning calorimeter, scanning electron microscope, optical microscope, and hardness checking, critical transition temperatures and cooling rates of three springs steels were measured. Although the thermal transformation of materials has been researched for decades using dilatometers, not all materials have been characterized. The research offers insights into the critical transformation temperatures for the defined grades of spring steel and the role of cooling rates in the material’s properties. Mechanical properties are influenced by the transition data obtained from the dilatometric analysis.

Relationship of Microstructure and Mechanical Properties in Er-Containing Aluminum Alloy

2015 ◽  
Vol 1120-1121 ◽  
pp. 1109-1114
Author(s):  
Xin Lei ◽  
Hui Huang ◽  
S.P. Wen
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Aluminum Alloy ◽  
Treatment Process ◽  
Mg Alloys ◽  
The Other ◽  
Heat Treatment Process ◽  
Comprehensive Performance ◽  
Relationship Of ◽  
Al Mg Alloys

This study investigated the mechanical properties and microstructures of Er-containing Al–Mg alloys. The research found that the H114-T sheet of Er-containing Al–Mg alloys showed a relative good comprehensive performance in mechanical properties. With the special rolling and heat treatment process, this H114-T sheet showed different morphology of microstructures with the other sheets in Er-containing Al–Mg alloys. Grains in H114-T sheet performed irregular shape polygon, a number of subgrains appeared in grains, the amount of dislocations in grains decreased. H114-T sheet possessed a lot of Copper texture, this may be one of important factors influenced the mechanical properties.

Study of Cu Addition on Precipitation Behaviors and Mechanical Properties in AA6082 Al-Mg-Si Alloy

2007 ◽  
Vol 546-549 ◽  
pp. 825-828 ◽  
Author(s):  
Man Jin ◽  
Jing Li ◽  
Guang Jie Shao
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Thermal Stability ◽  
Treatment Process ◽  
Mechanical Tests ◽  
Age Hardening ◽  
Heat Treatment Process ◽  
Softening Process

The precipitation behaviors and microstructures of nano-precipitates in AA6082 Al-Mg-Si alloy with and without Cu additions during heat treatment process were studied using hardness measurements, TEM, mechanical tests and 3DAP. Meanwhile, the softening process of 6082 alloys with Cu and without Cu, isothermally conditioned at 250°C, has also been investigated. It was found that the rate of age hardening, mechanical properties and thermal stability are higher for the Cu-containing alloy. The TEM and 3DAP observations showed that Q’ precipitates were existed after aged at 170°C for 8h in the alloy with Cu addition. Comparing the hardness, mechanical properties and thermal stability curves, it was concluded that the Q’ precipitates play a major role in improving the age hardening kinetics and properties of 6082 alloy with Cu addition.

Effect of Heat Treatment Process on Mechanical Properties and Microstructure of S280

2021 ◽  
Vol 1035 ◽  
pp. 344-349
Author(s):  
Ye Qin Zhang ◽  
Ping Zhong ◽  
Huan Feng Li ◽  
Wen Qiang Zhang
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Treatment Process ◽  
Lath Martensite ◽  
Solution Temperature ◽  
Heat Treatment Process ◽  
Strengthening Phase ◽  
Optimal Heat Treatment ◽  
Precipitate Strengthening ◽  
Temperature Heating

The effect of solution temperature and aging temperature on mechanical properties and microstructure of the new ultrahigh strength stainless steel S280 was investigated by heat treatment process experiment. The results showed that the optimal heat treatment process was as follows: heating to 1080 °C，holding for a hour, and quenching in oil; cooling to -73 °C, holding for 2 hour, and warming in air to room temperature; heating to 540~550 °C, holding for 4 hour, and cooling in air. Choosing this heat treatment process, the steel can get good coordination between strength and toughness. Analyzed by HREM, the steel had desirable microstructures, which were fine lath martensite matrix with high density dislocation and finely dispersed precipitate strengthening phase, and film-like reversed austenite precipitated from the boundary of martensite.

scholarly journals Heat Treatment Effect on Mechanical Properties of 3D Printed Polymers

2019 ◽  
Vol 264 ◽  
pp. 02001 ◽  
Author(s):  
Eduardo de Avila ◽  
Jaeseok Eo ◽  
Jihye Kim ◽  
Namsoo P. Kim
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Treatment Effect ◽  
Biomedical Applications ◽  
Treatment Process ◽  
Heat Treatment Process ◽  
Post Heat Treatment ◽  
Intraocular Surgery ◽  
Osteoinductive Potential ◽  
3D Printed

PMMA, PC, and PEEK are thermoplastic polymers that possess favorable properties for biomedical applications. These polymers have been used in fields of maxillo-facial, orthopedic, intraocular surgery, and bio-implant, due to their excellent mechanical properties, osteoinductive potential, and antimicrobial capabilities. In this study, the effect of heat treatment on the mechanical properties of 3D printed polymers was characterized. By modifying printing temperature and post heat treatment process, the mechanical properties were specifically tailored for different applications, correlating with the properties of the implants that are commonly made using molding processes.

scholarly journals Heat treatment effect on metal matrix composite with brass matrix and fly ash

2018 ◽  
Vol 204 ◽  
pp. 05020
Author(s):  
Aminnudin Aminnudin ◽  
Moch. Agus Choiron
Keyword(s):  
Heat Treatment ◽  
Fly Ash ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Coal Combustion ◽  
Metal Matrix ◽  
Treatment Process ◽  
Impact Test ◽  
Test Results ◽  
The Matrix

Metal matrix composite (MMC) is a combination of two or more materials using metal as a matrix. In this paper we used brass as the matrix and fly ash as for the particle. The fly ash used is fly ash which is produced from coal combustion in the Paiton power plant. Fly ash composition in the MMC are 5% and 10%. The MMC was produced with gas furnace. Heat tratment to MMC was done at 350 and 400 °C.Hard testing process, tensile test and impack test are carried out at MMC before heat treatment and after heat treatment. From the test results showed an increase in hardness, tensile strength and impact test showed the heat treatment process at a temperature of 350 °C. Heat treatment at a temperature of 400 °C does not improve the mechanical properties of MMC

The influence of heat treatment process on mechanical properties of surface treated volcanic ash particles/polyphenylene sulfide composites

2016 ◽  
Vol 39 (5) ◽  
pp. 1604-1611 ◽  
Author(s):  
Mustafa Özgür Bora ◽  
Onur Çoban ◽  
Togayhan Kutluk ◽  
Sinan Fidan ◽  
Tamer Sinmazçe˙lk
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Volcanic Ash ◽  
Treatment Process ◽  
Polyphenylene Sulfide ◽  
Heat Treatment Process

Numerical Simulation of the H-Beam during Cooling Process

2013 ◽  
Vol 310 ◽  
pp. 145-149 ◽  
Author(s):  
Jian Liu ◽  
Fu Zeng Hou ◽  
Xiao Guang Yu
Keyword(s):  
Mechanical Properties ◽  
Numerical Simulation ◽  
Heat Treatment ◽  
Theoretical Basis ◽  
Treatment Process ◽  
Residual Austenite ◽  
Heat Treatment Process ◽  
Cooling Process ◽  
Controlled Cooling ◽  
H Beam

In order to improve the comprehensive mechanical properties of the steel, the heat treatment software COSMAP is used to simulate the rolling and controlled cooling of H-beam. The numerical simulation shows that the mechanical properties of controlled cooling can be obviously improved, when the cooling rate is controlled at 10°C/s around. Strength and hardness can be improved under the condition of ductility and toughness ensured. Meanwhile the amount of residual austenite can be reduced significantly. It provides a theoretical basis for further optimization of the heat treatment process.

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