Mechanical Spectroscopy Of Bearing Steel

Archives of Metallurgy and Materials

Mingjiang Jin¹  Xianwen Lu¹  Wei Li¹  Na Min²  Xiaohui Lu³  Xuejun Jin³ 

[1] INSTITUTE OF ADVANCED STEELS AND MATERIALS, SCHOOL OF MATERIALS SCIENCE AND ENGINEERING, SHANGHAI JIAO TONG UNIVERSITY, SHANGHAI 200240, CHINA;SCHOOL OF MATERIALS SCIENCE AND ENGINEERING, SHANGHAI UNIVERSITY, 149 YANCHANG ROAD, SHANGHAI 200444, CHINA;STATE KEY LAB OF METAL MATRIX COMPOSITE, SCHOOL OF MATERIALS SCIENCE AND ENGINEERING, SHANGHAI JIAO TONG UNIVERSITY, SHANGHAI 200240, CHINA

关键词: Keywords: Bearing steel;    twin martensite;    carbon atoms;    mechanical spectroscopy;    internal friction;    Snoek-Köster peak;   

DOI  :  10.1515/amm-2015-0352

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

This study presents mechanical spectroscopy of bearing steel subjected to different heat treatments. A non-thermally activated maximum, P1, was found at 130°C, in quenched martensitic samples, which were austenitized at 1050°C and 860°C, and presented twin martensite microstructures. It is suggested that the mechanism of the P1 maximum, observed on the low-temperature side of Snoek-Köster peak, is related to the change of defect configurations in twinned martensite assisted with high mobility of the solute carbon atoms under an external harmonic stress field applied during mechanical loss measurements.

【 授权许可】

Unknown