自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

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中南大学学报(英文版)

Journal of Central South University

Vol. 20    No. 4    April 2013

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Effect of tempering temperature on microstructure and mechanical properties of AISI 6150 steel
LI Hong-ying(李红英) 1, HU Ji-dong (胡继东)1, LI Jun(李俊)2, CHEN Guang(陈广)1, SUN Xiong-jie(苏雄杰)1

1. School of Materials Science and Engineering, Central South University, Changsha 410083, China;
2. Research Institute, Baoshan Iron & Steel Co. Ltd, Shanghai 201900, China

Abstract:Effect of tempering temperature on the microstructure and mechanical properties of AISI 6150 steel was investigated. All samples were austenitized at 870 °C for 45 min followed by oil quenching, and then tempered at temperatures between 200 and 600 °C for 60 min. The results show that the microstructure of tempered sample at 200 °C mainly consists of tempered martensite. with increasing the tempered temperature, the martensite transforms to the ferrite and carbides. The ultimate tensile strength, the hardness and the retained austenite decrease with increasing tempered temperature, and 0.2% yield strength increases when the temperature increases from 200 to 300 °C and then decreases with increasing the temperature, but the elongation and impact energy increase with increasing the tempering temperature.

 

Key words: tempering temperature; AISI 6150 steel; microstructure; mechanical property

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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