拉伸预应变对TRIP钢显微组织和力学性能影响
Effect of Tensile Pre-Strain on Microstructure and Mechanical Properties of TRIP Steels
摘 要
对TRIP 590和TRIP 780两种强度级别的钢板进行了应变量为5%, 10%, 15%的拉伸预应变, 通过静态拉伸试验和扫描电镜研究了拉伸预应变对钢中残余奥氏体含量和力学性能的影响。结果表明: 随着预应变量的增加, 钢中的残余奥氏体含量减少, 马氏体转变; 拉伸预应变提高了钢的抗拉强度和伸长率,随预应变量的增大, 强度明显增加, 塑性变化不大。
相变诱发塑性
拉伸预应变
残余奥氏体
TRIP steel
transformation induced plasticity
tension pre-strain
retained austenite
Abstract
TRIP 590 and TRIP 780 steel were pre-stained by tension with strain of 5%, 10% and 15% respectively. The effects of tension pre-strain on retained autensite content and mechanical properties were studied by static tensile test and scanning electron microscopy. The results show that the content of retained austenite in steel reduced and transformed to martensite with increase of the pre-strain, the tensile pre-strain increased tensile strength and elongation of the steel. Strength increased obviously, but ductility changed a little with increase of pre-strain.
中图分类号 TG142.1
所属栏目
基金项目 教育部长江学者与创新团队发展计划资助项目(531105050037); 湖南大学汽车车身先进设计制造国家重点实验室自主课题资助项目(60870005)
收稿日期 2010/12/15
修改稿日期 2011/7/13
网络出版日期
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备注曾宇卓(1986-), 男, 湖南长沙人, 硕士研究生。
引用该论文: ZENG Yu-zhuo,LI Guang-yao,LIU Di-hui. Effect of Tensile Pre-Strain on Microstructure and Mechanical Properties of TRIP Steels[J]. Materials for mechancial engineering, 2011, 35(12): 26～28
曾宇卓,李光耀,刘迪辉. 拉伸预应变对TRIP钢显微组织和力学性能影响[J]. 机械工程材料, 2011, 35(12): 26～28
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参考文献
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【10】YU Hai-yan, GAO Yun-kai, DE Jian.Trans-formation behavior of retained austenite under different deformation modes for low alloyed TRIP assisted steels [J].Materials Science and Engineering A,2006,441:331-335.
【11】SUGIMOTO K I, KANDA A, KIKUCHI R,et al.Ductility and formability of newly developed high strength low alloy TRIP-aided sheet steels with annealed martensite matrix [J]. ISIJ Intern,2002,42(8):910-915.
【12】ECKART D, STEFFEN K, CHRISTINA S.Properties and application of TRIP-steel in sheet metal forming [J]. Steel Research,2002,73(2):303-308.
【13】YU Hai-yan.Variation of elastic modulus during plastic deformation and its influence on springback [J]. Materials & Design,2009,30:846-850.
【14】余海燕,林忠钦. TRIP钢板在单向拉伸变形下的相变行为研究[J]. 材料科学与工艺,2004,12(4):433-435.
【2】OLSON G B, COHEN M.Kinetics of strain induced martensitic transformation [J]. Metallurgical Transaction A,1975,6:791-795.
【3】SAKUMA Y, MATSUMURA O, AKISURE O,et al.Influence of C content and annealing temperature on microstructure and mechanical properties of 400 C transformed steel containing retained austenite[J]. ISIJ Intern,1991,31(11):1348-1353.
【4】SAKUMA Y, MATSUMURA O, TAKECHI I I,et al.Mechanical properties and retained austenite in intercritically heat-treated bainite transformed steel and their variation with Si and Mn additions [J]. Metallurg Trans A,1991,22(2):489-498.
【5】JEONG W C, MATLOCK D K, KRAUSS G.Observation of deformation and transformation on behavior of retained austenite in a 0.14C-1.2Si-1.5Mn steel with ferrite-bainite -austenite structure [J]. Mater Sci Eng A,1993,165(1):1-8.
【6】HECKER S S, STOUT M, STAUDGAMMER K P,et al.Effects of strain state and strain rate on deformation induced transformation in 304 stainless steel Part I:magnetic measurements and mwchanical behavion [J]. Metallurg Trans A,1982,13(4):627-637.
【7】BLECK W, SCHAEL I. Determination of crash- relevant material parameters by dynamic tensile Test [J]. Steel Research,2000,71:173/178.
【8】DAN W J, ZHANG WG, LI S H,et al. A model for strain-induced martensitic transformation of TRIP steel with strain rate [J]. Computational Materials Science,2007,40:101-107.
【9】孙鹏,李麟,韦习成,等. 温度对TRIP钢动态拉伸性能的影响[J]. 金属热处理,2003,28(10):11-14.
【10】YU Hai-yan, GAO Yun-kai, DE Jian.Trans-formation behavior of retained austenite under different deformation modes for low alloyed TRIP assisted steels [J].Materials Science and Engineering A,2006,441:331-335.
【11】SUGIMOTO K I, KANDA A, KIKUCHI R,et al.Ductility and formability of newly developed high strength low alloy TRIP-aided sheet steels with annealed martensite matrix [J]. ISIJ Intern,2002,42(8):910-915.
【12】ECKART D, STEFFEN K, CHRISTINA S.Properties and application of TRIP-steel in sheet metal forming [J]. Steel Research,2002,73(2):303-308.
【13】YU Hai-yan.Variation of elastic modulus during plastic deformation and its influence on springback [J]. Materials & Design,2009,30:846-850.
【14】余海燕,林忠钦. TRIP钢板在单向拉伸变形下的相变行为研究[J]. 材料科学与工艺,2004,12(4):433-435.
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