The strain of the proeutectoid ferrite in hypoeutectoid steel drawing was measured and analyzed by quantitative metallography.

采用定金相法分析计算了亚共析钢拉拔形中先共析铁素体。

By means of analysis, hardness test, abrasion test, this paper studies the effect of boron-sulphurizing on microstructure and properties of boronized layer.

通过金相分析、硬度测试、损测定，研究了硫共层组织和性能的影响。

In this paper,the mechanism of workpiece burn during grinding of casehardened steel and titanium alloys was studied by the use of SEM,EPMA,XPS and the metallograph analysis.

本文用SEM,EPMA、XPS及金相显微分析等技术研究了表面硬化钢和钛合金的烧伤机理。

An investigation was made on the effect of rewelding on mechanical properties of Ultra-low carbon austenitic stainless steel based on mechanical properties test and microstructure examination.

通过反复焊接1～5次的超低碳奥氏体不锈钢力学性能的试验及金相组织的分析,研究了反复焊接超低碳奥氏体不锈钢力学性能的影响。