研究了逆相变退火温度对0.1C5Mn钢连铸坯的组织结构和力学性能的影响规律,采用SEM进行组织结构的表征,利用XRD技术分析连铸坯退火后奥氏体含量,并测试了退火试样的力学拉伸性能.试验结果表明,连铸坯退火过程中发生奥氏体逆转变且在较低退火温度下有少量碳化物析出,随着退火温度升高,奥氏体含量先增加后减少,析出物逐渐溶解消失.提高退火温度可以显著提高试验钢的抗拉强度但却降低它的屈服强度,另外随退火温度升高,断后伸长率和强塑积先增高后降低.在625～650℃退火,可以获得20％～25％的伸长率.研究结果说明利用逆转变退火可以大幅度提高中锰钢铸坯的力学性能.
参考文献
| [1] | 董瀚,曹文全,时捷,王存宇,王毛球,翁宇庆.第3代汽车钢的组织与性能调控技术[J].钢铁,2011(06):1-11. |
| [2] | Cao Wenquan;Shi Jie;Wang Chang.The 3rd Generation Automobile Sheet Steels Presenting With Ultrahigh Strength and High Ductility[A].北京,2010 |
| [3] | Shi Jie;Cao Wenquan;Dong Han.Ultrafine Grained High Strength Low Alloy Steel With High Strength And High Ductility[J].Materials Science Forum,2010(654-656):238. |
| [4] | 张凤泉,陈贵江,康永林,杨雄飞,刘本仁,刘文仲,欧阳金明.汽车用低合金钢的现状与发展[J].特殊钢,2003(04):1-4. |
| [5] | SHI Wen,LI Lin,Bruno C De Cooman,Patrick Wollants,YANG Chun-xia.Thermal Stability of Retained Austenite in TRIP Steel After Different Treatments[J].钢铁研究学报（英文版）,2008(01):61-64. |
| [6] | LIU Ji-yuan,ZHANG Zi-cheng,ZHU Fu-xian,LI Yan-mei,Manabe Ken-ichi.Effect of Cooling Method on Microstructure and Mechanical Properties of Hot-Rolled C-Si-Mn TRIP Steel[J].钢铁研究学报：英文版,2012(01):41-46. |
| [7] | Han Heung Nam;Lee Chang Gil;Suh Dong-Woo et al.A Microstructure-Based Analysis for Transformation Induced Plasticity and Mechanically Induced Martensitic Transformation[J].Materials Science and Engineering A,2008,485(01):224. |
| [8] | Jozef Zrnik;Ondrej Stejskal;Zbysek Novy;Peter Hornak;Martin Fujda .Structure dependence of the TRIP phenomenon in Si-Mn bulk steel[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2007(1/2):253-258. |
| [9] | Bellhouse E M;Mertens A I M;McDermid J R .Development of the Surface Structure of TRIP Steels Prior to Hot-Dip Galvanizing[J].Materials Science and Engineering A,2007,463(01):147. |
| [10] | WU Di,LI Zhuang,L(U) Hui-sheng.Effect of Controlled Cooling After Hot Rolling on Mechanical Properties of Hot Rolled TRIP Steel[J].钢铁研究学报（英文版）,2008(02):65-70. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%