12%Cr钢晶粒度对疲劳抗力的影响  

作　　者：王海凤[1] 陈佰军[1] 王有铭[1] 

机构地区：[1]哈尔滨汽轮机厂有限责任公司

出　　处：《黑龙江科技信息》2004年第6期253-253,共1页Heilongjiang Science and Technology Information

摘　　要：本文借助于化学、金相等分析方法。分析和研究了不同热处理工艺条件下,12%Cr 叶片钢常温拉伸性能、冲击性能和高周疲劳性能的变化。认为性能的改变与晶粒度的大小直接相关,而晶粒尺寸受控于奥氏体化温度,并找到了与最佳综合性能和最高疲劳抗力相对应的最佳热处理工艺参数。The variations of tensile strength, impact strength and high-cycle fatigue strength of 12% Cr blade steel under different heat treatment conditions are analyzed and studied by means of chemical and metallurgical meth- ods.It is summed up that such variations have direct relations with the grain size,and the grain size depends on the anstenite tempera- ture.Finally,the optimum heat treatment pa- rameters corresponding to the best comprehen- sive performance and highest fatigue strength are found out.

关 键 词：热处理工艺 晶粒度 疲劳抗力 汽轮机 钢 叶片 

分 类 号：TG161[金属学及工艺—热处理]