用电子探针分析(EPMA)测量钢中珠光体平均片层间距  

A Method of Measuring the Average Pearlite Interlamellar Spacing in Steel Using Electron Probe Microanalysis

作　　者：康皓[1] 韩宗涛 赵宪明[3] 吴迪[3] 

机构地区：[1]兰州交通大学机电工程学院,甘肃兰州730070 [2]河北兴华钢铁有限公司,河北邯郸056300 [3]东北大学轧制技术及连轧自动化国家重点实验室,辽宁沈阳110819

出　　处：《物理测试》2014年第2期28-30,共3页Physics Examination and Testing

摘　　要：以典型的珠光体钢U75V重轨钢为例,介绍了一种利用电子探针分析(EPMA)测定钢中珠光体平均片层间距的方法。选择尽量垂直于珠光体片层的法线方向作为扫描路径,得到碳含量分布曲线为"波峰"+"波谷"的形状,两个"波峰"或"波谷"之间的距离即为一个珠光体片层间距,由于扫描路径长度已知,通过计算扫描路径上"波峰"或"波谷"的数量就可以获得该视场下珠光体的平均片层间距。此法直观、简单、计算量少,所测得的珠光体平均片层间距更接近其真实平均片层间距。Taking the typical pearlitic steel U75V as an example, a method of measuring the average pearlitic interla- mellar spacing in steel by electron probe microanalysis （EPMA） was introduced. Choosing the scanning path as per- pendicular to pearlite interlamellar as possible, the curve of C content alternated as ＂wave trough＂ and ＂wave crest＂. The distance between two ＂wave trough＂ or two ＂ware crest＂ is one pearlitic interlamellar spacing. The method is direct, simple, and the measurement of pearlite interlamellar spacing is close to the true value.

关 键 词：电子探针分析(EPMA) 测量 片层间距 

分 类 号：TG115[金属学及工艺—物理冶金]