摘要
采用热膨胀法和金相法,在Formastor-F试验机上测定了含Ti系微合金热轧搪瓷钢RT360的Ac1和Ac3以及Ms,并测定了该钢在不同冷却速度下连续冷却时的膨胀曲线,获得了该钢的连续冷却转变曲线(CCT曲线)及其相应组织,测定结果为大生产热处理工艺的制定提供了理论基础.当轧后冷却速率<0.5℃/s,可获得理想的多边形铁素体+少量珠光体组织.淬硬性倾向较小,基本不会出现冷裂纹.
By dilatometrie change referencing microscopic test and hardness measurement, the critical point at Acl, Ac3 long with Ms of Ti-bearing microalloyed hot-rolled enamel steel was determined in Formastor-F thermalmechanical simulate. The different expanding curves of Continuous Cooling Transformation CCT diagram was measured. The CCT diagram provided the theoretical basis for the design of rolling and cooling process. When the cooling rate was less than 0. 5℃/s, the ideal polygon ferrite and a small amount of pearlite is able to be generated. Thanks to the small hardening tendency, the cold crack would not appear in the matrix.
作者
陶军晖
吴田
戴伟
李杰
陈木青
汪川惠
陈欣琦
李睿
靳海芹
祁红艳
TAO Junhui;WU Tian;DAI Wei;LI Jie;CHEN Muqing;WANG Chuanhui;CHEN Xinqi;LI Rui;JIN Haiqin;QI Hongyan(Institute for Functional Materials,School of Physics Hubei University of Education,and Mechanical and Electronical Engineering,Wuhan 430205,Chin)
出处
《华中师范大学学报（自然科学版）》
CAS
北大核心
2018年第4期503-507,共5页
Journal of Central China Normal University：Natural Sciences
基金
国家自然科学基金项目(51702091
11404104)
湖北省自然科学基金项目(2018CFB296
2017CFB581
2016CFB202
2017CFB192)
湖北省技术创新专项(重大项目)(2016AAA038)
湖北省高等学校优秀中青年科技创新团队计划项目(T201620)
湖北省教育厅科学技术研究计划项目(Q20173003
B2017215)
湖北第二师范学院科研项目(XK2016SS10)
关键词
含Ti系
微合金
热轧搪瓷钢
连续冷却转变曲线
组织
Ti-bearing
micro-alloy
hot-rolled enamel steel
continuous cooling transi tlon curve
mlcostructure
