| 均热温度对Ti-V复合微合金钢组织演变和硬度的影响 |
| |
| 引用本文： | 倪玲玲,付锡彬,张可,赵时雨,任武彬,李昭东,李景辉,张明亚.均热温度对Ti-V复合微合金钢组织演变和硬度的影响[J].金属热处理,2021,46(3):146-152. |
| |
| 作者姓名： | 倪玲玲 付锡彬 张可 赵时雨 任武彬 李昭东 李景辉 张明亚 |
| |
| 作者单位： | 1.安徽工业大学 冶金工程学院, 安徽 马鞍山 243032; 2.钢铁研究总院 工程用钢所, 北京 100081 |
| |
| 基金项目： | 国家重点研发计划(2017YFB0304700,2017YFB0305100);国家自然科学基金(51704008);钒钛资源综合利用国家重点实验室开放基金(18100009);国家重点基础研究计划(2015CB654803)。 |
| |
| 摘 要： | 利用OM、SEM、Vickers硬度计等手段研究了均热温度对Ti-V复合微合金钢组织转变及硬度的影响,并阐明了组织演变和硬度变化的原因。结果表明,Ti-V钢不同均热温度淬火后组织均为马氏体。随着均热温度由1000 ℃升至1250 ℃,Ti-V钢的硬度由333 HV降低到212 HV,原始奥氏体晶粒尺寸由52 μm升至209 μm。全固溶温度以上时,仍存在少量TiN粒子,且随温度升高逐渐溶解,其对晶界的钉扎作用是阻止晶粒长大的主要因素。Ti-V钢原始奥氏体尺寸对硬度的影响随其尺寸的增大逐渐减小,均热温度应选择1220 ℃以下,以避免粗大晶粒。
|
| 关 键 词： | Ti-V复合微合金钢 均热温度 组织 硬度 |
| 收稿时间： | 2020-11-15 |
Effect of soaking temperature on microstructure evolution and hardness of Ti-V complex microalloyed steel |
| |
| Ni Lingling,Fu Xibin,Zhang Ke,Zhao Shiyu,Ren Wubin,Li Zhaodong,Li Jinghui,Zhang Mingya.Effect of soaking temperature on microstructure evolution and hardness of Ti-V complex microalloyed steel[J].Heat Treatment of Metals,2021,46(3):146-152. |
| |
| Authors: | Ni Lingling Fu Xibin Zhang Ke Zhao Shiyu Ren Wubin Li Zhaodong Li Jinghui Zhang Mingya |
| |
| Affiliation: | 1. School of Metallurgical Engineering, Anhui University of Technology, Ma'anshan Anhui 243032, China; 2. Institute of Structural Steels, Iron and Steel Research Institute, Beijing 100081, China |
| |
| Abstract: | Effect of soaking temperature on microstructure transformation and hardness of Ti-V microalloyed steel was investigated by means of OM,SEM and Vickers hardness tester.The reasons for microstructure evolution and hardness change were also clarified.The results show that the microstructure of Ti-V steel with different soaking temperatures is all martensite.As the soaking temperature rises from 1000℃to 1250℃,the quenchened hardness of Ti-V steel decreases from 333 HV to 212 HV,and the prior austenite grain size increases from 52μm to 209μm.Above the total solution temperature,a small amount of Ti N particles still exist and gradually dissolve with increasing of temperature.The pinning effect of the Ti N on the grain boundaries is the main factor preventing the growth of grains.The influence of prior austenite size on the hardness of Ti-V steel gradually decreases with the increase of its size.Therefore,the soaking temperature should be below 1220℃to avoid coarse grains. |
| |
| Keywords: | Ti-V complex microalloyed steel soaking temperature microstructure hardness |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《金属热处理》浏览原始摘要信息 |
|
点击此处可从《金属热处理》下载全文 |
|
