RESIDUAL STRESS DISTRIBUTION IN LASER ALLOYING ZONE WITH FECSIB POWDER

摘要：

Laser alloying surface of spheroidal graphite iron and plain carbon steel improve the wear resistance of many industrial components. But the distribution of residual stress in the laser alloying zone and its adjacent area, that may affect the wear performance and the sensitivity of fatigue and fracture, has not been investigated systematically. In this paper the stresses distribution on the spheroidal graphite iron surface of the laser alloying zone with FeCSiB powder has been measured by X-ray diffraction technique. The results of XRD and optical microscope quantitative analysis show that the main phases of the laser alloying zone are Fe3C and α-Fe (plus martensite) with approximate the same volume fraction. The residual stress state of the two phases has been analyzed. It is found that laser alloying zone (LAZ) is subjected to high tensile stresses while the area surround LAZ is subjected to compressive stresses.

关键词： Laser residual stress X-ray diffraction alloying

作者: Zhengyang LI Haiyan ZHAO Minlin ZHONG Bin ZHANG YU GU Qiulin WU Hongjun ZHANG Wenjin LIU

作者单位: Key Laboratory for Advanced Materials Processing Technology, Department of MechanicalEngineering, Ts Key Laboratory for Advanced Materials Processing Technology, Department of Mechanical Engineering, T Beijing Beiye Functional Materials Co. Ltd., Beijing, 100085, P. R. China

会议类型: 国际会议

会议名称: 第三届太平洋国际激光与光学应用会议(PICALO 2008)

会议地点: 北京

会议语种:英文

页码: 482-487

在线出版日期: 2008-04-16（万方平台首次上网日期，不代表论文的发表时间）