摘要
Laser beams with ns pulse width are generally employed as an excitation source in the process of detecting inclusions and elemental segregation on a workpiece surface by microanalysis of the laser-induced breakdown spectroscopy.In addition,the ablation crater interval of laser sampling on the sample surface is generally 20μm or more.It is difficult to detect the morphology of inclusions smaller than 50μm in diameter and the micro-segregation of elements.However,in this work,when the laser ablation crater is 10μm and the sampling resolution of the laser on the sample surface is 5μm,the morphology and distribution of spherical inclusions(20–60μm)in ductile iron can be detected according to the difference of the Fe spectrum on the Fe matrix and the spheroidal inclusions.Moreover,the distribution of micro-segregation of Mg and Ti elements in ductile iron was also studied.
作者
Wei Wang
Lanxiang Sun
Peng Zhang
Liming Zheng
Lifeng Qi
Jinchi Wang
汪为;孙兰香;张鹏;郑黎明;齐立峰;王金池(State Key Laboratory of Robotics,Shenyang Institute of Automation,Chinese Academy of Sciences,Shenyang 110016,People’s Republic of China;Key Laboratory of Networked Control System,Shenyang Institute of Automation,Chinese Academy of Sciences,Shenyang 110016,People's Republic of China;Institutes for Robotics and Intelligent Manufacturing,Chinese Academy of Sciences,Shenyang 110169,People’s Republic of China;University of Chinese Academy of Sciences,Beijing 100049,People's Republic of China)
基金
supported by the National Key Research and Development Program of China(No.2017YFF0106202)
the Key Research Program of Frontier Sciences,Chinese Academy of Sciences(No.QYZDJ-SSW-JSC037)
the Liaoning Revitalization Talents Program(No.XLYC1807110)
the Youth Innovation Promotion Association,Chinese Academy of Sciences。
