scholarly journals Effect of Different Parameters of Quenching and Tempering Process on SS410 Grade Martensitic Stainless Steel

2021 ◽  
Vol 9 (VII) ◽  
pp. 2712-2721
Author(s):  
Priya Narsale
Keyword(s):  
Stainless Steel ◽  
Martensitic Stainless Steel ◽  
Air Cooling ◽  
Austenitizing Temperature ◽  
Quenching Rate ◽  
Tempering Temperature ◽  
Temperature Ranges ◽  
General Material ◽  
Quenching And Tempering ◽  
Tempering Process

This paper reports the influence of different chemical composition, austenitizing temperature, quenching rate and tempering temperature on the mechanical properties and microstructure of martensitic stainless-steel SS 410 grade. For calculating general material properties such as hardness and yield strength of SS 410 grade, JMatpro software is used. Analysis of SS 410 grade has been done for austenitizing temperature ranging from 9250C to 10100C followed by tempering whose temperature ranges from 2050C to 6050C.The proper practices of quenching and tempering should be performed ensuring the suitable microstructure of the steels. To get fully Martensite, quenching has to be done at least at 0.40C/s or more than that. The results also shows that composition of carbon has great effect on transition temperature Ms and Mf of martensitic stainless steel 410 grade as compared to chromium. Air cooling or oil quenching this type steels from austenite phase results in microstructure consists of mainly hard and brittle martensite, small amount of retained austenite. Subsequent tempering process reduces hardness and increases ductility and toughness.

Burnishing Characteristics of Sliding Burnishing Process With Active Rotary Tool Targeting Stainless Steel

2020 ◽  
Author(s):  
Masato Okada ◽  
Shin Terada ◽  
Yuki Kataoka ◽  
Takeshi Kihara ◽  
Takuya Miura ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Material Flow ◽  
Smooth Surface ◽  
Martensitic Stainless Steel ◽  
Bending Properties ◽  
Rotary Tool ◽  
Bending Property ◽  
Burnishing Process ◽  
Quenching And Tempering

Abstract This paper investigates the burnishing characteristics of a developed sliding burnishing method with active rotary tool targeting a martensitic stainless steel. Two types of martensitic stainless steel, annealing (AN) stainless steel and quenching and tempering (QT) stainless steel, were targeted. The burnishing characteristics evaluated included surface roughness, profile, microstructure, subsurface hardness, bending property, and corrosion resistance. A sufficiently smooth surface, approximately Ra = 0.1 μm and Ra = 0.025 μm in both materials, respectively, was obtained using the developed burnishing method; irregular profile smoothing occurred due to the material flow of the subsurface. The subsurface hardness increased at a depth of 40 μm or more when using the developed burnishing method on the AN material, but no effect was observed for the QT material. Moreover, the bending yield point and strength of the sheet shape workpiece increased by applying the burnishing process to the AN material. The influence of the burnishing process on the bending properties was also observed for the QT material. Corrosion resistance can be improved through the burnishing process.

scholarly journals Effect of austenitising heat treatment on microstructure and properties of a nitrogen bearing martensitic stainless steel

Open Physics ◽  
2019 ◽  
Vol 17 (1) ◽  
pp. 601-606 ◽  
Author(s):  
Xiao Li ◽  
Yinghui Wei
Keyword(s):  
Heat Treatment ◽  
Grain Size ◽  
Stainless Steel ◽  
Retained Austenite ◽  
Martensitic Stainless Steel ◽  
Optimum Combination ◽  
Holding Time ◽  
Air Cooling ◽  
Metal Release ◽  
Scanning Electron

Abstract The effect of austenitising heat treatment on the microstructure, hardness and metal release of the nitrogen bearing, martensitic stainless steel 420U6 was investigated. The heat treatment was carried out at temperatures between 950 to 1,150∘C with a holding time between 30 to 120min, followed by air cooling. The quenched microstructures observed by a scanning electron microscope indicated that by increasing the austenitising temperature and holding time, the number of carbides decreases while the grain size and the amount of retained austenite increases. For a given holding time, the hardness increases to a peak and then decreases continuously with the increase of temperature. The metal release test, according to the GB 4806.9-2016 standard, reveals that the metal release concentration is highly affected by the austenitising temperature. The parameters of the austenitising heat treatment, which can achieve the optimum combination of hardness and metal release, were obtained.

Numerical and Experimental Study of Quenching and Tempering Process of AISI 4130 Steel for Rocket Components

2018 ◽  
Vol 792 ◽  
pp. 16-22
Author(s):  
Kritsana Thummikanonth ◽  
Pairoj Sapsamanwong ◽  
Apirath Gositanon ◽  
Thawatchai Boonluang
Keyword(s):  
Numerical Analysis ◽  
Raw Material ◽  
Experimental Result ◽  
Quenching Temperature ◽  
Tempering Temperature ◽  
Soaking Time ◽  
Analysis Technique ◽  
Aisi 4130 ◽  
Quenching And Tempering ◽  
Tempering Process

In manufacturing process of rocket components, quenching and tempering process can be used to achieve suitable hardness, ultimate tensile strength and yield strength of raw material. The trial and error of quenching and tempering process to succeed suitable properties of raw material will waste of budget and time. In this study, numerical analysis of quenching and tempering process on AISI 4130 steel was investigated comparative to actual heat treatment process to evaluate the agreement between them. The numerical analysis technique was used to seek suitable tempering temperature with specify quenching temperature at 870°C and soaking time for an hour. The result showed that suitable tempering temperature was 450°C to achieve as-required mechanical properties. The actual quenching and tempering process was performed by furnace heating to 860°C and soaking for 60 minutes, followed by 450°C tempering for 2 hours. The results will be comparatively concluded that they slightly differed from numerical analysis around 5%-12% and showed a good agreement between numerical analysis and experimental result.

Effect of Tempering Temperature on Microstructure and Properties of Laser-cladded Martensitic Stainless Steel Layer

2019 ◽  
Vol 46 (12) ◽  
pp. 1202001
Author(s):  
朱红梅 Zhu Hongmei ◽  
胡文锋 Hu Wenfeng ◽  
李勇作 Li Yongzuo ◽  
李柏春 Li Baichun ◽  
邱长军 Qiu Changjun
Keyword(s):  
Stainless Steel ◽  
Martensitic Stainless Steel ◽  
Tempering Temperature ◽  
Microstructure And Properties ◽  
Steel Layer

Study of Direct Quenching and Tempering Process of a Low Carbon Equivalent 960 MPa Grade Steel

2013 ◽  
Vol 744 ◽  
pp. 329-333
Author(s):  
Feng Lu ◽  
Chao Wang ◽  
Yuan Yuan Li ◽  
Long Lu ◽  
Zhao Dong Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Lath Martensite ◽  
Controlled Rolling ◽  
Carbon Equivalent ◽  
Low Carbon ◽  
Tempering Temperature ◽  
Experimental Steel ◽  
Direct Quenching ◽  
Quenching And Tempering ◽  
Tempering Process

The chemical composition of a 960 Mpa grade high strength steel with low carbon equivalent was designed. Effect of direct quenching and tempering process on the microstructure and mechanical properties of the experimental steel was studied. Results showed that fine lath martensite was obtained after controlled rolling and direct quenching. With tempering temperature increasing, the mechanical properties showed different trends for different tempering stages. And this had a direct relationship with the microstructure evolution. The matrix recovery softening, carbon desolution and precipitation of nanomicroalloy carbides influenced the strength change. With increase of tempering time, the strength decreased and toughness improved. Experimental steel tempered at 450 °C for 40min could obtain the best mechanical properties, which meet the requirement with a large impact energy margin.

Variation of the Reversed Austenite Amount with the Tempering Temperature in a Fe-13%Cr-4%Ni-Mo Martensitic Stainless Steel

2010 ◽  
Vol 650 ◽  
pp. 193-198 ◽  
Author(s):  
Yuan Yuan Song ◽  
Xiu Yan Li ◽  
Fu Xing Yin ◽  
De Hai Ping ◽  
Li Jian Rong ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Stainless Steel ◽  
Martensitic Stainless Steel ◽  
Low Carbon ◽  
Reversed Austenite ◽  
X Ray Diffraction ◽  
Tempering Temperature ◽  
X Ray ◽  
Transmission Electron

Tempering temperature dependence of the amount of the reversed austenite in the range of 570 oC to 680 oC was investigated by means of X-ray diffraction (XRD) measurements and transmission electron microscopy (TEM) in a low carbon Fe-13%Cr-4%Ni-Mo (wt.%) martensitic stainless steel. It was found that the reversed austenite began to form at the tempered temperature slightly above the As temperature. As the tempered temperature increased, the amount of the reversed austenite changed little in the temperature range of 580-595 oC. Then, the amount of the reversed austenite increased sharply with the increased tempered temperature. When the tempered temperature increased to about 620 oC, the amount of the reversed austenite exhibited a peak. Afterward, it decreased quickly at the elevated tempered temperature. The microstructural evolvement of the reversed austenite at different tempering temperature was also observed by TEM.

scholarly journals Effect of Quenching Media Variations on the Mechanical Behavior of Martensitic Stainless Steel

2019 ◽  
Vol 15 (2) ◽  
pp. 1-12 ◽  
Author(s):  
Abbas Kh. Hussein ◽  
Laith K. Abbas ◽  
Wisam N. Hasan
Keyword(s):  
Heat Treatment ◽  
Stainless Steel ◽  
Wear Rate ◽  
Process Parameters ◽  
Impact Energy ◽  
Salt Solution ◽  
Martensitic Stainless Steel ◽  
Austenitizing Temperature ◽  
Soaking Time ◽  
Α Al2o3

The purpose of this study is designate quenching and tempering heat treatment by using Taguchi technique to determine optimal factors of heat treatment (austenitizing temperature, percentage of nanoparticles, type of base media, nanoparticles type and soaking time) for increasing hardness, wear rate and impact energy properties of 420 martensitic stainless steel. An (L18) orthogonal array was chosen for the design of experiment. The optimum process parameters were determined by using signal-to-noise ratio (larger is better) criterion for hardness and impact energy while (Smaller is better) criterion was for the wear rate. The importance levels of process parameters that effect on hardness, wear rate and impact energy properties were obtained by using analysis of variance which applied with the help of (Minitab18) software. The variables of quenching heat treatment were austenitizing temperature (985 C˚,1060 C˚),a soaking times (50,70 and 90 minutes) respectively, Percentage of volumetric fractions of nanoparticles with three different levels(0.01, 0.03 and 0.08 %) were prepared by dispersing nanoparticles that are  (α-Al2O3,TiO2 and CuO) with base fluids (De-ionized water, salt solution and engine oil).The specimens were tempered at 700°C after quenching of nanofluids for  (2 hours).The results for ( S/N) ratios showed the order of the factors in terms of the proportion of their effect on hardness, and wear rate  properties as follow: Austenitizing temperature ( 1060 C˚),Type of base media (salt solution), Nanoparticles type (CuO), Percentage of nanoparticles (0.08%) and Soaking time(90min) was the least influence while for the impact energy were as follows: Type of base media (oil), Austenitizing temperature (985C˚), Percentage of nanoparticles (0.01%), Nanoparticles type (α-Al2O3) and last soaking time (50min).

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