晏轻,王福明,程慧静,张健苹,桑德广

• 1:北京科技大学高效钢铁冶金新技术国家重点实验室
• 2:北京科技大学冶金与生态工程学院
• 3:河北钢铁集团舞阳钢铁有限责任公司

摘要(Abstract)：

利用DIL805A型淬火变形膨胀仪,测定了WQ960E工程机械用钢以不同冷却速度连续冷却时的膨胀曲线,并结合金相-硬度法,获得该钢的过冷奥氏体连续冷却转变曲线(CCT曲线)。根据CCT曲线,结合光学显微镜与扫描电镜分析结果,研究了冷却速率对相变组织演变规律的影响。结果表明:当冷速为0.06℃/s时,相变组织为铁素体(F)+粒状贝氏体(GB);冷速为0.2℃/s时,组织为粒状贝氏体(GB);冷速为0.5℃/s时,开始出现板条贝氏体(LB);冷速为5℃/s时,出现马氏体(M)。

关键词(KeyWords)： WQ960E钢;CCT曲线;热模拟;微观组织

Abstract:

Keywords:

基金项目(Foundation): 中央高校基本科研业务费专项资金(FRF-SD-12-010A)

作者(Author): 晏轻,王福明,程慧静,张健苹,桑德广

DOI: 10.13289/j.issn.1009-6264.2013.05.019

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