Mechanical Spectroscopy Of Bearing Steel

Archives of Metallurgy and Materials

Li Wei¹  Jin Mingjiang¹  Lu Xianwen¹  Min Na²  Lu Xiaohui³  Jin Xuejun³ 

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

DOI  :  10.1515/amm-2015-0352

来源: DOAJ

【 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