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

采定量金相法分计算了亚拉拔变形中先铁素体变量。

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、硬度测试、损测定，研究了硼硫渗对渗硼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SEM,EPMA、XPS金相显微分等技术研究了表面硬化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.

通过对反复焊接1～5次的超低碳奥氏体不锈力学性能的试验金相组织的分,研究了反复焊接对超低碳奥氏体不锈力学性能的影响。