CAJ | 학술논문

开发了409L和410S铁素体不锈钢冷轧板的淬火-配分（Q&P）工艺，获得了铁素体、马氏体和残余奥氏体的复相组织。通过优化奥氏化温度、淬火温度和配分时间，获得了尽量多的马氏体和残余奥氏体。与常规退火和淬火-回火（Q&T）工艺相比，Q&P工艺获得了最优的强度和延伸率组合、连续性屈服和适中的n值、r值，达到了高强度和易成型的要求，能够替代先进高强钢用于生产汽车结构件。
개발료409L화410S철소체불수강랭알판적쉬화-배분（Q&P）공예，획득료철소체、마씨체화잔여오씨체적복상조직。통과우화오씨화온도、쉬화온도화배분시간，획득료진량다적마씨체화잔여오씨체。여상규퇴화화쉬화-회화（Q&T）공예상비，Q&P공예획득료최우적강도화연신솔조합、련속성굴복화괄중적n치、r치，체도료고강도화역성형적요구，능구체대선진고강강용우생산기차결구건。
Quenching and partitioning(Q&P)treatment was applied to cold rolling sheets of 409L and 410S ferritic stainless steels,which resulted in a multiphase microstructure of ferrite, martensite and retained austenite. The austenitizing temperature,quenching temperature and partitioning time were optimized to obtain the maximum martensite and retained austenite. Compared to normally annealed and quenching and tempering(Q&T)treated sheets,the Q&P treated one exhibited the best combination of strength and elongation,a continuous yielding and moderate n-value and r-value,which satisfied the requests of high strength and well formability and can substitute advanced high-strength steel in manufacture of automobile structural parts.