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材料研究学报  2012, Vol. 26 Issue (2): 175-180    
  研究论文 本期目录 | 过刊浏览 |
高强贝氏体基体钒微合金化TRIP钢的性能
许云波1, 侯晓英1,  王业勤2,  吴迪1
1.东北大学轧制技术及连轧自动化国家重点实验室 沈阳 110819
2.山东莱芜钢铁股份公司 莱芜 271104
Mechanical Properties of High-strength V-microalloyed TRIP-aided Sheet Steel with Bainitic Ferrite Matrix
XU Yunbo1,   HOU Xiaoying1,    WANG Yeqin 2,   WU Di1
1.State Key Laboratory of Rolling Technology & Automation, Northeast University, Shenyang 110819
2.Laiwu Iron and Steel Corp., Laiwu 271104
引用本文:

许云波 侯晓英 王业勤 吴迪. 高强贝氏体基体钒微合金化TRIP钢的性能[J]. 材料研究学报, 2012, 26(2): 175-180.
, , , . Mechanical Properties of High-strength V-microalloyed TRIP-aided Sheet Steel with Bainitic Ferrite Matrix[J]. Chin J Mater Res, 2012, 26(2): 175-180.

全文: PDF(929 KB)  
摘要: 对一种钒微合金化TRIP钢进行冷轧连续退火, 研究了钢的组织特征和力学性能。结果表明, 贝氏体基TRIP钢的组织由贝氏体/马氏体和少量的残余奥氏体组成。随着贝氏体区等温时间的延长, 钢的抗拉强度下降, 屈服强度和延伸率提高。残余奥氏体由块状向薄膜状转变, 体积分数增加, 薄膜状残余奥氏体主要分布在贝氏体板条间, 厚度为50--90 nm。在400℃等温180 s连续退火钢板呈现出相对低抗拉强度(960 MPa)、高屈服强度(765 MPa)和高延伸率(22.0%)的特性, 而且加工硬化指数(0.20)、各向异性指数(0.94)和强塑积(21120 MPa.%)也较为优良。
关键词 金属材料钒微合金TRIP钢残余奥氏体特征贝氏体基体力学性能    
Abstract:The microstructural characteristics and mechanical properties of a V-microalloyed TRIP steel after cold rolling and continuous annealing were investigated. The results show that the microstructure of TRIP steel with bainitic ferrite matrix is composed of bainitic/martensite and a small amount of retained austenite. With increasing the bainite holding time, the yield strength and elongation rate of the tested material increase, and the tensile strength decreases. The blocky retained austenites mostly turn into 50-90 nm flims between bainite laths and the volume fraction of retained austenite increases. When holding at 400oC for 180 s, a relatively low tensile strength (960MPa), high yield strength (765MPa) and elongation rate (22.0%) of continuous annealing sheet steel can be obtained, and strain-hardening exponent (0.20), anisotropy exponent (0.94) and tensile strength–plastic performance (21120 MPa.%) are excellent.
Key wordsmetallic materials    vanadium-containing TRIP steel    retained austenite characteristics    bainitic ferrite matrix    mechanical properties
收稿日期: 2011-08-30     
ZTFLH: 

TG142

 
基金资助:

国家自然科学基金51174059,50971039、国家重点基础研究发展计划973计划, 2011CB606306和中央高校基本科研业务费110407003资助项目。

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