| ZrC/奥氏体相界面形变诱导铁素体相变超细化机理 |
| |
| 引用本文： | 唐明华,刘志义,邓彬,胡双开,厉春元.ZrC/奥氏体相界面形变诱导铁素体相变超细化机理[J].材料工程,2010(5). |
| |
| 作者姓名： | 唐明华 刘志义 邓彬 胡双开 厉春元 |
| |
| 作者单位： | 中南大学,材料科学与工程学院,长沙,410083;湖南工学院,机械工程系,湖南,衡阳,421002;中南大学,材料科学与工程学院,长沙,410083;湖南工学院,机械工程系,湖南,衡阳,421002;湖南衡阳钢管(集团)有限公司,湖南,衡阳,421001 |
| |
| 摘 要： | 利用Gleeble-1500热模拟试验机进行单轴热压缩实验,研究了含ZrC粒子的低碳钢在形变诱导相变过程中ZrC粒子对铁素体晶粒细化的影响及铁素体形核的基本特性.结果表明:一定粒径和体积分数的ZrC粒子弥散分布于基体相中时,能够阻碍位错的运动,形成集中形变区,加速形变诱导相变的进程,因而提高铁素体形核率,导致铁素体晶粒细化;ZrC/奥氏体相界面上形变诱导铁素体相变具有形核位置不饱和性、新生α相超细晶的特点;在应变条件下,铁素体晶粒在〈111〉方向择优取向,晶粒内部存在一定量的小角度晶界,由于铁素体动态再结晶的发生,组织进一步细化.ZrC/奥氏体相界面铁素体晶粒的超细化机理是形变诱导相变、铁素体动态再结晶及ZrC粒子弥散强化三者同时作用的结果.
|
| 关 键 词： | ZrC粒子 形变诱导铁素体相变 超细晶 机理 |
Mechanism of Ultrafine Grain of Deformation Induced Ferrite Transformation at ZrC/Austenitic Interface |
| |
| TANG Ming-hua,LIU Zhi-yi,DENG Bin,HU Shuang-kai,LI Chun-yuan.Mechanism of Ultrafine Grain of Deformation Induced Ferrite Transformation at ZrC/Austenitic Interface[J].Journal of Materials Engineering,2010(5). |
| |
| Authors: | TANG Ming-hua LIU Zhi-yi DENG Bin HU Shuang-kai LI Chun-yuan |
| |
| Affiliation: | TANG Ming-hua1,2,LIU Zhi-yi1,DENG Bin2,HU Shuang-kai3,LI Chun-yuan2(1 School of Materials Science and Engineering,Central South University,Changsha 410083,China,2 Department of Mechanical Engineering of Hunan InstituteTechnology,Hengyang 421002,Hunan,3 Hunan Hengyang Steel Tube Group Co.,Ltd.,Hengyang 421001,China) |
| |
| Abstract: | In order to deeply understand the mechanism of ultrafine grain of the low carbon steel obtaining ZrC particles,the effects of ZrC particles on ferrite grain refinement and basic characteristics of ferrite nucleating for this steel after deformation induced ferrite transformation at ZrC/austenitic interface were investigated by uniaxial hot compression simulation experiment.The results show that ZrC particles with definite size and suitable volume fraction dispersing in the matrix phase can hinder the moveme... |
| |
| Keywords: | ZrC particle deformation induced ferrite transformation ultra-fine grain mechanism |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
