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材料研究学报  2011, Vol. 25 Issue (2): 158-164    
  研究论文 本期目录 | 过刊浏览 |
热轧钒微合金TRIP钢的微观组织和力学性能
侯晓英,  许云波,  吴迪
东北大学轧制技术及连轧自动化国家重点实验室 沈阳 110819
Microstructure and Mechanical Properties of 980 MPa Grade Hot Rolled V-microalloyed TRIP Steel
HOU Xiaoying, XU Yunbo, WU Di
State Key Laboratory of Rolling Technology & Automation, Northeast University, Shenyang 110819
引用本文:

侯晓英 许云波 吴迪. 热轧钒微合金TRIP钢的微观组织和力学性能[J]. 材料研究学报, 2011, 25(2): 158-164.
. Microstructure and Mechanical Properties of 980 MPa Grade Hot Rolled V-microalloyed TRIP Steel[J]. Chin J Mater Res, 2011, 25(2): 158-164.

全文: PDF(1240 KB)  
摘要: 对一种钒微合金TRIP钢进行了热轧试验, 并研究其微观组织特征及力学性能。结果表明, 将终轧温度控制在Ae3附近, 热轧后的钒微合金TRIP钢具有由铁素体、粒状贝氏体和一定量残余奥氏体组成的复相组织。EBSD分析结果表明, 其中75%以上的铁素体晶粒尺寸在1--6 μm; 绝大多数晶界取向差角度位于29o--60o。当终轧温度为830℃、终冷温度为650℃时, 实验钢的综合力学性能较为优异, 抗拉强度为1015 MPa, 延伸率为19.5\%, 加工硬化指数为0.24。
关键词 金属材料钒微合金TRIP钢力学性能晶界取向差    
Abstract:The microstructural characteristics and mechanical properties of a V-microalloyed TRIP steel after hot rolling under laboratory conditions were investigated. The results show that multiphase microstructure with ferrite, granular bainite and retained austenite can be obtained if the finishing temperature is nearby Ae3. EBSD analyses show that 75% or more ferrite grain size is in the range of 1–6 μm; most of the misorientation angles between grains were in the range of 29?–60?. When finishing rolling temperature was 830℃ and final cooling temperature was 650℃, the steel have excellent mechanical properties, the tensile strength arrives at 1015MPa, the elongation rate is 19.5% and strain-hardening exponent is 0.24.
Key wordsmetallic materials    vanadium-containing TRIP steel    mechanical properties    boundaries with misorientation
收稿日期: 2010-07-22     
ZTFLH: 

TG111

 
基金资助:

中央高校基本科研业务费090407001, 十一五国家科技支撑计划2007BAE51B07和国家自然科学基金重点50734001资助项目。

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