中国重型装备
中國重型裝備
중국중형장비
China Heavy Equipment
2015年
4期
32-35
,共4页
马正伟%张椰阳%胡梅青%张大淼
馬正偉%張椰暘%鬍梅青%張大淼
마정위%장야양%호매청%장대묘
ER307Mo不锈钢%铁素体%偏析%开裂
ER307Mo不鏽鋼%鐵素體%偏析%開裂
ER307Mo불수강%철소체%편석%개렬
ER307Mo stainless steel%ferrite%segregation%crack
采用宏观分析、光谱成分分析、金相分析、扫描电镜-能谱分析对热轧6道次后表面开裂的ER307Mo不锈钢进行了全面分析。结果表明，化学成分控制导致铁素体含量偏高且化学元素在断面上分布有偏析使得铁素体分布不均匀。奥氏体相和铁素体相在高温变形时不同步，材料整体高温塑性偏低，在轧制变形力的作用下产生了开裂。
採用宏觀分析、光譜成分分析、金相分析、掃描電鏡-能譜分析對熱軋6道次後錶麵開裂的ER307Mo不鏽鋼進行瞭全麵分析。結果錶明，化學成分控製導緻鐵素體含量偏高且化學元素在斷麵上分佈有偏析使得鐵素體分佈不均勻。奧氏體相和鐵素體相在高溫變形時不同步，材料整體高溫塑性偏低，在軋製變形力的作用下產生瞭開裂。
채용굉관분석、광보성분분석、금상분석、소묘전경-능보분석대열알6도차후표면개렬적ER307Mo불수강진행료전면분석。결과표명，화학성분공제도치철소체함량편고차화학원소재단면상분포유편석사득철소체분포불균균。오씨체상화철소체상재고온변형시불동보，재료정체고온소성편저，재알제변형력적작용하산생료개렬。
Surface crack of ER307Mo stainless steel after hot rolling 6 passes has been conducted complete analy-sis by means of macro analysis, spectrum compositions analysis, metallographic analysis and SEM-energy spectrum anslysis, the result showed that improper chemical composition control resulted in higher ferrite content and segreation of chemical elements existing in section caused uneven ferrite distribution, austenite phase wasn′t deformed with ferrite phase synchronously in high temperature and integral pyroplasticity of material turned to be lower, all the factors gener-ated crack under rolling deformation force.
