摘要
用Gleeble-1500D热模拟试验机和电子显微镜研究了在950～750℃不同温度下变形50％后0.05C- 0.13Nb钢的组织和析出相。结果表明,随变形温度由950℃下降至750℃,0.05C-0.13Nb钢中多边形铁索体含量(体积分数)由20％增至80％,多边形铁素体晶粒尺寸由9μm降至4μm;变形后的组织由多边形铁索体、粒状贝氏体和1～3μm马氏体/奥氏体岛组成;钢中的析出物为1～10 nm的Nb(C,N),随变形温度降低析出物数量增加。
The structure and precipitates of 0. 05C-0. 13Nb steel deformed by 50% at different temperature between 950 -750 ℃ have been studied by Gleeble-1500D thermal simulation machine, SEM and TEM. Results showed that with deforming temperature decreasing from 950 ℃ to 750 ℃, the polygonal ferrite content （ volume percent） in 0. 05C-0. 13Nb steel increased from 20% to 80% and grain size of polygonal ferrite decreased from 9 um to 4 um; the deformed structure in steel consisted of polygonal ferrite, grain bainite and 1 - 3 um martensite/austenite island ; and the amount of 1 - 10 nm precipitates Nb（ C, N） in steel increased with decreasing deformed temperature.
出处
《特殊钢》
北大核心
2007年第3期32-34,共3页
Special Steel
关键词
变形温度
0.13Nb钢
组织
析出物
Deforming Temperature, 0.13Nb Steel, Structure, Precipitates
