金属学报  2011, Vol. 47 Issue (8): 1022-1025    DOI: 10.3724/SP.J.1037.2011.00152

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无Si含P连续退火TRIP钢力学性能研究

定巍1,2,唐荻2,江海涛2,王宝峰1,3,龚志华 1

1. 内蒙古科技大学材料与冶金学院, 包头 014010 2. 北京科技大学高效轧制国家工程研究中心, 北京 100083 3. 内蒙古科技大学国际学院, 包头 014010

MECHANICAL PROPERTIES OF CONTINUOUSLY ANNEALLED Si–FREE P–CONTAINING TRIP STEEL

DING Wei 1,2, TANG Di 2, JIANG Haitao 2, WANG Baofeng 1,3, GONG Zhihua 1

1. School of Material and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010 2. National Engineering Research Center for Advanced Rolling Technology, University of Science & Technology, Beijing 100083 3. International School, Inner Mongolia University of Science and Technology, Baotou 014010

定巍 唐荻 江海涛 王宝峰 龚志华. 无Si含P连续退火TRIP钢力学性能研究[J]. 金属学报, 2011, 47(8): 1022-1025.
, , , , . MECHANICAL PROPERTIES OF CONTINUOUSLY ANNEALLED Si–FREE P–CONTAINING TRIP STEEL[J]. Acta Metall Sin, 2011, 47(8): 1022-1025.

摘要 参考文献 相关文章 Metrics 全文: PDF(386 KB)   摘要: 利用拉伸试验机和纳米力学探针对一种无Si含P连续退火TRIP钢的力学性能和铁素体微区力学性能进行了研究. 宏观拉伸实验结果表明,无Si含P系TRIP钢拥有良好的力学性能, 其屈服强度高达550-600 MPa,抗拉强度在740 MPa以上, 断后延伸率均在25%以上.利用纳米力学探针对铁素体微区力学性能进行测试的结果表明, 无Si含P系TRIP钢铁素体纳米硬度值比中Si系TRIP钢纳米硬度值高约0.6 GPa,由此引起的屈服强度差异约为75 MPa, 抗拉强度差异约为80 MPa. 关键词 ： 无Si,  TRIP钢,  力学性能     Abstract：Since its advent, TRIP steel has been considered as the best automotive steel to improve the automotive safety dramatically because of its excellent mechanical properties. However, TRIP steel was not widely used and the main reason is that the large amount of Si in the steel led to surface quality problems of the plate. In this work a kind of C–Mn–Al–P TRIP steel with Si being replaced by Al and P was designed and subjected to continuous annealing. The macro and micro mechanical performance was analyzed. The results showed that the mechanical properties were excellent with tensile strength between 740 and 790 MPa and elongation above 25%, indicating that the production of TRIP steel without Si addition was feasible. Compared with traditional TRIP steel with Si, the designed steel demonstrated higher yield strength of 550—600 MPa, which was a little higher than that of high Si steel and much higher than that of medium or low Si steel. The micro hardness of ferrite was measured by nano mechanics probe and it was 0.6 GPa higher than that of medium Si TRIP steel. The IF steel whose strength was already known was used as a calibration and the conclusion was that the 0.6 GPa difference in nano hardness could result in 75 MPa difference in yield strength and 80 MPa division in tensile strength. Through further analysis, it was believed that the higher strength of ferrite was mainly caucsed by C, not P. Key words： non–Si    TRIP steel    mechanical property 收稿日期: 2011-03-23      基金资助: 国家自然科学基金资助项目50804005 作者简介: 定巍, 男, 回族, 1983年生, 博士 服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 定巍 唐荻 江海涛 王宝峰 龚志华 44.8K 链接本文: https://www.ams.org.cn/CN/10.3724/SP.J.1037.2011.00152      或      https://www.ams.org.cn/CN/Y2011/V47/I8/1022 [1] Zackay F, Parker E R, Fahr D, Bush R. ASM Trans Quart, 1967; 60: 252 [2] Sakuma Y, Matsumura O, Takechi H. Metall Mater Trans, 1991; 22A: 489 [3] Sugimoto K, Usui N, Kobayashi M, Hashimoto S. ISIJ Int, 1992; 32: 1311 [4] Bhadeshia H K D H, Edmonds D V. Metall Mater Trans, 1979; 10A: 895 [5] Takahashi M , Bhadeshia H K D H. Mater Trans JIM, 1991; 32: 689 [6] Meyer M D, Vanderschueren D, de Cooman B C. ISIJ Int, 1999; 39: 813 [7] Jacques P J, Girault E, Mertens A, Verlinden B, Humbeeck J V, Delannay F. ISIJ Int, 2001; 41: 1068 [8] Suh D, Park S, Oh C, Kim S. Scr Mater, 2007; 57: 1097 [9] Srivastava A K, Bhattacharjee D, Jha G, Gope N, Singh S B. 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