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金属学报  2014, Vol. 50 Issue (3): 269-274    DOI: 10.3724/SP.J.1037.2013.00571
  论文 本期目录 | 过刊浏览 |
微米/亚微米双峰尺度奥氏体组织形成机制*
武会宾1) 武凤娟1) 杨善武2) 唐 荻1)
1) 北京科技大学高效轧制国家工程研究中心, 北京100083
2) 北京科技大学材料科学与工程学院, 北京 100083
THE FORMATION MECHANISM OF AUSTENITE STRUCTURE WITH MICRO/SUB-MICROMETER BIMODAL GRAIN SIZE DISTRIBUTION
WU Huibin 1), WU Fengjuan 1), YANG Shanwu 2), TANG Di 1)
1) National Engineering Research Center for Advanced Rolling Technology, University of Science and Technology Beijing, Beijing 100083
2) School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083
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摘要: 通过冷轧变形结合变形后在820~870 ℃退火, 在316L奥氏体不锈钢中实现了微米(3~5 μm为主)和亚微米(300~500 nm为主)双峰晶粒尺度分布. 在奥氏体冷变形过程中, 形变孪生与应变诱导马氏体相变都集中发生于大变形阶段, 据此推断奥氏体形变孪生是产生应变诱导马氏体的微观机制. 在820~870 ℃范围内退火时, 样品的硬度和晶粒尺寸分布几乎保持恒定. 通过对退火过程中变形奥氏体和应变诱导马氏体演化驱动力的比较分析, 推断奥氏体双峰尺度晶粒尺寸分布的来源是: 微米尺度晶粒来自冷变形时未转变的变形奥氏体的再结晶, 而亚微米尺度晶粒主要由应变诱导马氏体逆转变而产生.
关键词 微米/亚微米双峰晶粒尺寸分布原位拉伸形成机制    
Abstract:Nano-crystalline (<100 nm) and ultrafine grained (100~500 nm) materials have high strength and toughness, but its work hardening ability and uniform elongation decreased relative to the coarse grained material. Through the deformation, phase transformation and recrystallisation combination mode of development of bimodal grain size distribution of ferrite, bainite steel, the elongation rate is greatly improved. These studies are generally in order to improve the mechanical properties of material through change microstructure, but lack of study for the bimodal grain size distribution formation mechanism. This research work by cold rolling with annealing at 820~870 ℃, in 316L austenitic stainless steel to achieve micro (3~5 μm) and sub-micro (300~500 nm) bimodal grain size distribution. In the austenite deformation process, deformation twinning and strain induced martensite transformation occurred in large deformation stage. Accordingly inferred austenite deformation twinning is the micro mechanism of strain induced martensite. Annealing at 820~870 ℃, the hardness of the samples and the grain size distribution remains nearly constant. Through the comparative analysis of induced martensite austenite evolution driving force and strain deformation during annealing, determined the source of bimodal grain size distribution. The micro scale grains came from the recrystallization of deformed austenite in the cold deformation does not change, and sub-micron grain size is mainly composed of strain induced martensite reverse transformation.
Key wordsmicro/sub-micrometer    bimodal grain size distribution    in situ tensile    formation mechanism
收稿日期: 2013-09-09     
ZTFLH:  TG142.7  
基金资助:* 国家科技重大专项资助项目2011ZX05016-004
Corresponding author: WU Huibin, associate professor, Tel: (010)62332598, E-mail: Wuhb@ustb.edu.cn   
作者简介: 武会宾, 男, 1977年生, 副教授, 博士

引用本文:

武会宾, 武凤娟, 杨善武,唐荻. 微米/亚微米双峰尺度奥氏体组织形成机制*[J]. 金属学报, 2014, 50(3): 269-274.
WU Huibin ), WU Fengjuan ), YANG Shanwu ), TANG Di ). THE FORMATION MECHANISM OF AUSTENITE STRUCTURE WITH MICRO/SUB-MICROMETER BIMODAL GRAIN SIZE DISTRIBUTION. Acta Metall Sin, 2014, 50(3): 269-274.

链接本文:

https://www.ams.org.cn/CN/10.3724/SP.J.1037.2013.00571      或      https://www.ams.org.cn/CN/Y2014/V50/I3/269

[1] Hwang B, Lee C G. Mater Sci Eng, 2010; A527: 4341
[2] Chen J, Li F, Liu Z Y, Tang S, Wang G D. ISIJ Int, 2013; 53: 1070
[3] Weng Y Q. Ultrafine Grained Steel. Beijing: Metallurgical Industry Press, 2003: 9
(翁宇庆. 超细晶钢. 北京: 冶金工业出版社, 2003: 9)
[4] Misra R D K, Zhang Z, Venkatasurya P K C, Somani M C, Karjalainen L P. Mater Sci Eng, 2011; A528: 1889
[5] Garcia M C, Caballero F G, Bhadeshia H K D H. ISIJ Int, 2003; 43: 1238
[6] Huang C X, Yang G, Gao Y L, Wu S D, Li S X, Zhang Z F. Philos Mag, 2007; 87: 4949
[7] Huang C X, Gao Y L, Yang G, Wu S D, Li G Y, Li S X. J Mater Res, 2006; 21: 1687
[8] Yang G, Huang C X, Wu S D, Zhang Z F. Acta Metall Sin, 2009; 45: 906
(杨 钢, 黄崇湘, 吴士丁, 张哲峰. 金属学报, 2009; 45: 906)
[9] Etiennea A, Radigueta B, Genevoisa C, Bretona J M, Valievb R, Pareigea P. Mater Sci Eng, 2010; A527: 5805
[10] Misra R D K, Zhang Z, Jia Z, Somani M C, Karjalainen L P. Scr Mater, 2010; 63: 1057
[11] Zhang K M, Zou J X. Thin Solid Films, 2012; 526: 28
[12] Rezaee A, Kermanpur A, Najafizadeh A, Moallemi M. Mater Sci Eng, 2011; A528: 5025
[13] Misra R D K, Zhang Z, Jia Z, Surya V, Somani M C, Karjalainen L P. Mater Sci Eng, 2011; A528: 6958
[14] Koeh C C. J Metast Nanocryst Mater, 2003; 18: 9
[15] KarimPoor A A, Erb U, Austetal K T. Mater Sci Forum, 2002; 415: 38
[16] Wang Y M, Chen M W, Zhou F. Nature, 2002; 419: 912
[17] Wang T S, Zhang F C, Zhang M, Lvb B. Mater Sci Eng, 2008; A485: 456
[18] Alizamini H A, Militzer M, Poole W J. Scr Mater, 2007; 57: 1065
[19] Chakrabarti D, Davis C, Strangwood M. Mater Charact, 2007; 58: 423
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