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印度EMD机车曲轴中频淬火工艺开发
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作者 周磊 《资阳机车科技》 2014年第1期33-37,共5页
本文通过印度EMD机车曲轴的中频淬火工艺开发,验证了采用低频率、长时间的加热方式可以达到较深的加热层;SAE5046及S44SY两种材料的对比中频淬火试验,验证了材料淬透性对曲轴中频淬火表面硬化层深度的重大影响,指导了实际生产,并... 本文通过印度EMD机车曲轴的中频淬火工艺开发,验证了采用低频率、长时间的加热方式可以达到较深的加热层;SAE5046及S44SY两种材料的对比中频淬火试验,验证了材料淬透性对曲轴中频淬火表面硬化层深度的重大影响,指导了实际生产,并最终完成了产品曲轴试制。 展开更多
关键词 碳钢曲轴 SAE5046 硬化层深度 比功率
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Effects of loading condition on very-high-cycle fatigue behaviour and dominant variable analysis 被引量:5
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作者 LEI ZhengQiang XIE JiJia +1 位作者 SUN ChengQi HONG YouShi 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS 2014年第1期74-82,共9页
The specimens of a high carbon chromium steel were quenched and tempered at 150℃, 180℃ and 300℃. Such specimens were tested via rotating bending and a push-pull type of axial loading to investigate the influences o... The specimens of a high carbon chromium steel were quenched and tempered at 150℃, 180℃ and 300℃. Such specimens were tested via rotating bending and a push-pull type of axial loading to investigate the influences of loading condition on the behaviour of very-high-cycle fatigue (VHCF). Experimental results show the different influences of inclusion size on the fa- tigue life for the two loading conditions. Predominant factors and mechanism for the fine-granular-area (FGA) of crack origin were discussed. In addition, a reliability analysis based on a modified Tanaka-Mura model was carried out to evaluate the sen- sitivity of inclusion size, stress, and AKFGA to the life of VHCF crack initiation. 展开更多
关键词 very-high-cycle fatigue FGA loading condition life scatter INCLUSION
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