搅拌摩擦加工细晶TA2工业纯钛晶粒长大规律

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英文篇名：Grain Growth Kinetics of Fine Grained TA2 Commercial Pure Titanium by Friction Stir Processing 作者：陈琛辉 ; 蒋璐瑶 ; 刘成龙 ; 黄伟九 ; 郭勇义 ; 胥桥梁 英文作者：CHEN Chenhui;JIANG Luyao;LIU Chenglong;HUANG Weijiu;GUO Yongyi;XU Qiaoliang;College of Materials Science and Engineering,Chongqing University of Technology;Chongqing Key Laboratory of Mold Technology,Chongqing University of Technology; 关键词：工业纯钛 ; 搅拌摩擦加工 ; 热处理 ; 晶粒长大 ; 织构 英文关键词：commercial pure Ti;;friction stir processing;;heat treatment;;grain growth;;texture 中文刊名：CLDB 英文刊名：Materials Reports 机构：重庆理工大学材料科学与工程学院;重庆理工大学模具技术重庆市重点实验室; 出版日期：2019-04-25 出版单位：材料导报 年：2019 期：v.33 基金：重庆市基础科学与前沿技术研究专项项目(cstc2015jcyjBX0048);; 重庆市社会事业与民生保障科技创新专项(cstc2017shmsA130047);; 国家“万人计划”科技创新领军人才项目~~ 语种：中文; 页：CLDB201908023 页数：4 CN：08 ISSN：50-1078/TB 分类号：120-123

摘要

TA2工业纯钛经过转速180 r/min、行进速度25 mm/min搅拌摩擦加工后发生剧烈塑性变形,获得晶粒尺寸均匀(平均晶粒尺寸为2μm)的细晶组织。在500～600℃对搅拌摩擦加工细晶TA2工业纯钛进行不同时间的退火处理,利用场发射扫描电子显微镜进行组织观察及织构表征,计算晶粒生长指数和激活能,并建立数学模型,系统研究搅拌摩擦加工细晶TA2工业纯钛晶粒长大行为。研究结果表明,搅拌摩擦加工细晶TA2工业纯钛晶粒长大过程中织构具有稳定性,退火处理后晶粒c轴平行于加工方向。当退火温度为550℃时,部分晶粒优先长大,600℃受热下,晶粒快速长大。在500～600℃内,搅拌摩擦加工细晶TA2工业纯钛晶粒的生长指数为3,生长激活能为328. 5 kJ/mol。研究表明,通过搅拌摩擦加工获得的细晶组织具有较好的晶粒稳定性。
        Fine grained TA2 commercial pure Ti was prepared by friction stir processing with 180 r/min and 25 mm/min. The average grain size of the processed TA2 alloy was 2 μm. Thermal stability and grain growth kinetics of fine grained TA2 alloy were studied. SEM images and EBSD results were used to analyze the microstructure and texture after annealing. The results showed that the texture of friction stir processed TA2 alloy was stable and c-axes were approximately parallel to processing direction after annealing treatment. Some grains preferentially grew up when the sample underwent heat treatment at 550 ℃. When the temperature reached 600 ℃,fine grains grew fast. When annealed between 500 ℃ to600 ℃,the grain growth exponent and the activation energy were 3 and 328. 5 kJ/mol,respectively. The microstructure and texture of fine grained TA2 prepared by friction stir processing could remain stable at 500 ℃.

引文

1 Zhang X Y,Zhao Y Q,Bai C G.Tianium alloy and applications,Chemical Industry Press,China,2005(in Chinese).张喜燕,赵永庆,白晨光.钛合金及应用,化学工业出版社,2005.
    2 Wu S,Fan K,Jiang P,et al.Materials Science and Engineering:A,2010,527(26),6917.
    3 Gao X,Zhang Z,Wang K S,et al.Materials Review A:Review Papers,2014,28(3),138(in Chinese).高雪,张郑,王快社,等.材料导报:综述篇,2014,28(3),138.
    4 Wglowski M S.Archives of Civil and Mechanical Engineering,2018,18(1),114.
    5 Liu F C,Liao J,Gao Y,et al.Journal of Alloys and Compounds,2015,626,304.
    6 Lee W,Lee C,Chang W,et al.Materials Letters,2005,59(26),3315.
    7 Kim W J,Yoo S J,Jeong H T,et al.Scripta Materialia,2011,64(1),49.
    8 Lee D,Li C,Lee Y,et al.Thermochimica Acta,2014,586,66.
    9 Qiao Z,Liu X Y,Zhao X C,et al.Rare Metal Materials and Engineering,2017,46(9),2618(in Chinese).乔珍,刘晓燕,赵西成,等.稀有金属材料与工程,2017,46(9),2618.
    10 Ghosh A,Gurao N P.Materials&Design,2017,115,121.
    11 Bozzolo N,Dewobroto N,Grosdidier T,et al.Materials Science and Engineering:A,2005,397(1-2),346.
    12 Hoseini M,Hamid Pourian M,Bridier F,et al.Materials Science and Engineering:A,2012,532,58.
    13 Burke J E,Turnbull D.Progress in Metal Physics,1952,3,220.
    14 Bhattacharyya J J,Agnew S R,Muralidharan G.Acta Materialia,2015,86,80.
    15 Roy I,Chauhan M,Lavernia E J,et al.Metallurgical and Materials Transactions A,2006,37A,721.
    16 Dhal A,Panigrahi S K,Shunmugam M S.Journal of Alloys and Compounds,2015,649,229.
    17 Wagner F,Bozzolo N,Van Landuyt O,et al.Acta Materialia,2002,50(5),1245.
    18 Chao Q,Hodgson P D,Beladi H.Materials Science and Engineering:A,2017,694,13.