两段式冷热改变对C-Mn钢奥氏体化温度的影响  

Influence of Two Segment Cooling and Heating on Austenite Temperatures of C-Mn Steel

作　　者：王凯[1] 

机构地区：[1]河南工业大学,河南郑州450000

出　　处：《铸造技术》2015年第7期1748-1749,1755,共3页Foundry Technology

摘　　要：利用全自动相变测定装置、扫描电镜及硬度测试仪,分析两段式冷却热膨胀试验中体育用C-Mn钢的组织和硬度变化。结果表明,试验钢中奥氏体的相变温度受到其冷却速度的影响,冷却速度较快时,试验钢中贝氏体的初始与最终相变温度降低,马氏体相变的初始温度升高,相变产物从珠光体和铁素体转化为网状铁素体、魏氏体、贝氏体以及马氏体。Through using the full automatic transformation test device, SEM and hardness tester, the microstructures and hardness changes of C-Mn steel during heating and cooling were investigated. The results show that the austenite phase transformation temperatures in test steel depend on cooling rate. High cooling rate can cause the decrease of banite transformation start and finish temperatures and the increase of martensite transformation temperatures. The transformation phases change from pearlite and ferrite to net shaped ferrite, Widmanst？tten, banite and matensite.

关 键 词：C-MN钢 先共析铁素体 冷却速度 奥氏体单一相 

分 类 号：TG142.1[一般工业技术—材料科学与工程]