有色金属科学与工程2017，Vol.8Issue(1)：35-41,7.DOI:10.13264/j.cnki.ysjskx.2017.01.006
微合金钢中纳米碳化物分析方法
Detection method of nano-carbide precipitates in microalloyed steel
摘要
Abstract
The nano-carbide precipitates in Ti microalloyed steel are obtained through direct thinning. Extraction replica and nondestructive electrolysis extraction, and different detection methods of nano-carbide precipitates are also compared. In the case of direct thinning, the orientation relationship between the nano-carbide precipitates and the matrix can be identified and used to analyze the formation process of nano-carbide precipitates. Since the M3C/MCmass fraction is more than 45, the MC-type carbide is more difficult to be observed for the direct thinning as compared in the case of extraction replica and nondestructive electrolysis extraction. In addition, direct thinning and extraction replica are only used to observe nano-carbide precipitates in a plane, while nondestructive electrolysis extraction can be used to observe the nano-carbide precipitates in a cube with a certain size, thus delivering representative and repeatable test results. Furthermore, after obtaining the nano-carbide precipitates by nondestructive electrolysis extraction, the phase composition and the particle size distribution of nano-carbide precipitates can be investigated through chemical phase analysis and X-ray small angle scattering. Therefore, the analysis results of nano-carbide precipitates obtained by nondestructive electrolysis extraction are more comprehensive.关键词
微合金钢/纳米碳化物/直接减薄/萃取复型/无损电解Key words
microalloyed steel/nano-carbide precipitates/direct thinning/extraction replica/nondestructive electrolysis extraction分类
矿业与冶金引用本文复制引用
杜开平,于月光,张淑婷,史记..微合金钢中纳米碳化物分析方法[J].有色金属科学与工程,2017,8(1):35-41,7.基金项目
国家自然科学基金资助项目(51234002) （51234002）
