Study on Microstructure and Properties of 42CrMo Bearing Ring in Cast-rolling Forming and Subsequent Quenching and Tempering

2016 ◽  
Vol 53 (2) ◽  
pp. 26
Author(s):  
Fangcheng QIN
Keyword(s):  
Microstructure And Properties ◽  
Bearing Ring ◽  
Quenching And Tempering ◽  
Subsequent Quenching

Study on the Microstructure and Properties of Prehardened Plastic-Mould SWFT Steel for Big Section

2007 ◽  
Vol 353-358 ◽  
pp. 1629-1632 ◽  
Author(s):  
Yi Luo ◽  
Xiao Chun Wu ◽  
Hong Bin Wang ◽  
Yong An Min
Keyword(s):  
Carbon Content ◽  
Comparative Experiment ◽  
Large Section ◽  
Microstructure And Properties ◽  
The Stability ◽  
Quenching And Tempering ◽  
Plastic Mould

In order to develop the prehardened plastic-mould SWFT steel for big section without quenching and tempering, the influence of carbon on the microstructure and corresponding hardness of steel under both air and sand cooling were investigated. It was demonstrated that when the carbon content of steels increased, the stability of overcooling austenite increased and the hardness difference decreased because of the decrease of bulk ferrite and the increase of bainite. The microstructure of No.8 steel under both air and sand cooling was mostly bainite and the hardness difference was less than 3HRC.And the No.8 steel had good machineability by the turning comparative experiment of No.8 steel and 45# steel. The prehardened plastic mould SWFT steel for big large section was produced successfully based on the experiment result.

Microstructure and Properties of 1.0C-1.5Cr Bearing Steel in Processes of Hot Rolling, Spheroidization, Quenching, and Tempering

2019 ◽  
Vol 90 (3) ◽  
pp. 1800470 ◽  
Author(s):  
Chang-Sheng Li ◽  
Zhen-Xing Li ◽  
Jin-Yi Ren ◽  
Xing-Yang Tu ◽  
Bin-Zhou Li
Keyword(s):  
Hot Rolling ◽  
Bearing Steel ◽  
Microstructure And Properties ◽  
Quenching And Tempering

scholarly journals Fractographic Analysis of Mechanical Properties of Microalloyed Steel

2021 ◽  
Vol 2070 (1) ◽  
pp. 012174
Author(s):  
N B Garg ◽  
A Garg
Keyword(s):  
Mechanical Properties ◽  
Impact Energy ◽  
Thermomechanical Processing ◽  
Microalloyed Steel ◽  
High Strength ◽  
Low Alloy Steels ◽  
The Past ◽  
Alloy Steels ◽  
Quenching And Tempering ◽  
Subsequent Quenching

Abstract Extensive efforts made over the past few decades have enhanced the rising performance of High-Strength Low-Alloy steels. Use of thermomechanical processing was considered for this research. However, the desired mechanical properties are obtained by formulating alloys. Further, to enhance mechanical properties, impact energy, the subsequent quenching and tempering are used. The metallurgical transformation caused by deformation followed by cooling and/or heat treatment has added influences on steels’ mechanical properties. The rational decrease in impact energy value is complex.

MICROSTRUCTURE AND PROPERTIES OF Al-Li-Cu-Mg-Zr (8090) HEAVY SECTION FORGINGS

1987 ◽  
Vol 48 (C3) ◽  
pp. C3-643-C3-652 ◽  
Author(s):  
R. E. LEWIS ◽  
E. A. STARKE ◽  
Jr. ◽  
W. C. COONS ◽  
G. J. SHIFLET ◽  
...  
Keyword(s):  
Microstructure And Properties ◽  
Heavy Section

INFLUENCE THE QUENCHING AND TEMPERING ON THE MICROSTRUCTURE, MECHANICAL PROPERTIES AND SURFACE ROUGHNESS, OF MEDIUM CARBON STEEL

2018 ◽  
Vol 18 (1) ◽  
pp. 125-135
Author(s):  
Sattar H A Alfatlawi
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Surface Roughness ◽  
Carbon Steel ◽  
Cold Water ◽  
Medium Carbon Steel ◽  
Medium Carbon ◽  
Heating And Cooling ◽  
Treatment Processes ◽  
Quenching And Tempering

One of ways to improve properties of materials without changing the product shape toobtain the desired engineering applications is heating and cooling under effect of controlledsequence of heat treatment. The main aim of this study was to investigate the effect ofheating and cooling on the surface roughness, microstructure and some selected propertiessuch as the hardness and impact strength of Medium Carbon Steel which treated at differenttypes of heat treatment processes. Heat treatment achieved in this work was respectively,heating, quenching and tempering. The specimens were heated to 850°C and left for 45minutes inside the furnace as a holding time at that temperature, then quenching process wasperformed in four types of quenching media (still air, cold water (2°C), oil and polymersolution), respectively. Thereafter, the samples were tempered at 200°C, 400°C, and 600°Cwith one hour as a soaking time for each temperature, then were all cooled by still air. Whenthe heat treatment process was completed, the surface roughness, hardness, impact strengthand microstructure tests were performed. The results showed a change and clearimprovement of surface roughness, mechanical properties and microstructure afterquenching was achieved, as well as the change that took place due to the increasingtoughness and ductility by reducing of brittleness of samples.

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