王锦林,甘章华,陈义明,吴润,肖建中

• 1:武汉科技大学材料与冶金学院
• 2:华中科技大学材料科学与工程学院

摘要(Abstract)：

采用Gleeble3500热模拟试验机对Ti-6Al-4V钛合金进行了焊接热模拟试验,模拟该合金自高温β相区以一定冷却速率冷却的过程。试样选用两端钻孔的标准焊接模拟试样,均温区约2 mm宽。采用金相显微镜、扫描电镜和X射线衍射分析研究了试样不同区域的显微组织与结构。热模拟区边缘区域为细小的片状α组织,中心均温区域为针状α′马氏体组织;XRD标定发现母材和热模拟区域的衍射峰分别与纯钛密排六方α和α′相偏移一个角度后重合;热模拟区域的显微硬度略高于母材。

关键词(KeyWords)： Ti-6Al-4V钛合金;Gleeble热模拟;显微组织;XRD

Abstract:

Keywords:

基金项目(Foundation): 国家“973”项目(61362)

作者(Author): 王锦林,甘章华,陈义明,吴润,肖建中

DOI: 10.13289/j.issn.1009-6264.2010.12.006

参考文献(References)：

• [1]Akman E,Demir A,Cace T,et al.Laser welding of Ti6Al4V titanium alloys[J].Materials Processing Technology,2009,209:3705-3713.
• [2]Seshacharyulu T,Dutta B.Influence of prior deformation rate on the mechanism ofβ→α+βtransformation in Ti-6Al-4V[J].Scripta Materialia,2002,46:673-678.
• [3]张喜燕,赵永庆,白晨光.钛合金及应用[M].北京:化学工业出版社,2005.
• [4]杨静,程东海,黄继华,等.TC4钛合金激光焊接工艺与接头组织性能研究[J].热加工工艺,2007,36(23):15-17.YANG Jing,CHENG Dong-hai,HUANG Ji-hua,et al.Effect of laser welding parameters on microstructure and mechanical properties of TC4 weldedjoints[J].Hot Working Technology,2007,36(23):15-17.
• [5]吴会强,冯吉才,何景山,等.Ti-6Al-4V电子束焊接焊缝区域精细组织特征[J].航空材料学报,2005,25(3):21-24.WU Hui-qiang,FENG Ji-cai,HE Jing-shan,et al.Fine microstructure characteristic in fusion zone of electron beam welding of Ti-6Al-4V[J].Journal of Aeronautical Materials,2005,25(3):21-24.
• [6]Saresh N,Gopalakrishna Pillai M,Jose Mathew.Investigations into the effects of electron beam welding on thick Ti-6Al-4V titanium alloy[J].Journal of Materials Processing Technology,2007,192-193:83-88.
• [7]尹丽香,许鸿吉,魏志宇,等.TC4钛合金电子束焊接接头高温性能与组织[J].焊接学报,2007,28(10):49-52.YIN Li-xiang,XU Hong-ji,WEI Zhi-yu,et al.Microstructures and high-temperature properties of TC4 titanium alloy joints welded by electron beam[J].Transactions of the China Welding Institution,2007,28(10):49-52.
• [8]赵敏,孙长伟,杜则裕.焊接热模拟技术及其应用[J].焊接技术,1999(4):41-42.ZHAO Min,SUN Chang-wei,DU Ze-yu.Weld thermal simulation technology and its application[J].Welding Technology,1999(4):41-42.
• [9]张文钺.焊接冶金原理[M].北京:机械工业出版社,1997.
• [10]王金雪,袁鸿,余槐,等.冷却速度对TC18钛合金焊接热模拟均温区组织和性能的影响[J].航天制造技术,2008(3):19-21.WANG Jin-xue,YUAN Hong,YU Huai,et al.Effect of cooling rate on the microstructure and properties of TC18 titanium alloy thermal simulation[J].Aerospace Manufacturing Technologies,2008(3):19-21.
• [11]钟玉,屈金山,陈文静,等.TC4钛合金电子束焊接头性能研究[J].焊接,2008(10):38-41.ZHONG Yu,QU Jin-shan,CHEN Wen-jing,et al.Welded joint property of TC4 Ti alloy by electron beam welding[J].Welding,2008(10):38-41.
• [12]Ding R,Guo Z.X,et al.Microstructural evolution of a Ti-6Al-4V alloy duringβ-phase processing:experimental and simulative investigations[J].Materials Science and Engineering A,2004,365:172-179.
• [13]Gil Mur F X,Rodriguez D,Planell J A.Influence of tempering temperature and time on theα′-Ti-6Al-4V martensite[J].Journal of Alloys andCompounds,1996,234:287-289.
• [14]Zeng L,Bieler T R.Effects of working heat treatment,and aging on microstructural evolution and crystallographic texture ofα,α′,α″andβphasesin Ti-6Al-4V wire[J].Materials Science and Engineering A,2005,392:403-414.
• [15]Jovanovic M T,Tadic S,Zec S,et al.The effect of annealing temperatures and cooling rates on microstructure and mechanical properties ofinvestment cast Ti-6Al-4V alloy[J].Materials and Design,2006,27:192-199.
• [16]程东海,黄继华,林海凡,等.TC4钛合金激光拼焊接头显微组织及力学性能分析[J].焊接学报,2009,30(2):103-106.CHENG Dong-hai,HUANG Ji-hua,LIN Hai-fan,et al.Microstructure and mechanical analysis of Ti-6Al-4V laser buttweld joint[J].Transactionsof the China Welding Institution,2009,30(2):103-106.
• [17]辛社伟,赵永庆,曾伟东.钛合金固态相变的归纳与讨论(Ⅲ)常用检测方法[J].钛工业进展,2007,25(3):26-33.XIN She-wei,ZHAO Yong-qing,ZENG Wei-dong.Inductions and discussions of solid state phase transformation of titanium alloy(Ⅲ)—Majortesting methods[J].Titanium Industry Progress,2007,25(3):26-33.
• [18]Wanjara P,Brochu M,Jahazi M.Ti-6Al-4V electron beam weld qualification using laser scanning confocal microscopy[J].MaterialsCharacterization,2005,54:254-262.
• [19]John W Elmer,Joe Wong,Thorsten ressler.spatially resolved X-ray diffraction phase mapping andα→β→αtransformation kinetics in the heat-affected zone of commercially pure titanium arc welds[J].Metallurgical and Materials Transactions A,1998,29:2761-2773.
• [20]邓安华.钛合金的马氏体相变[J].上海有色金属,1999,20(4):193-199.Deng An-hua.Martensitic transformation of titanium alloys[J].Shanghai Nonferrous Metals,1999,20(4):193-199.
• [21]Malinov S,Sha W,Guo Z,et al.Shnchrotron X-ray diffraction study of the phase transformations in titanium alloys[J].Materials Characterization,2002,48:279-295.
• [22]潘政全,于玉平,高艳芸.钛合金焊接工艺的探讨[J].化工装备技术,2002(2):13-14.PAN Zheng-quan,YU Yu-ping,GAO Yan-yun.Study of titanium alloy weld processing[J].Chemical Equipment Technology,2002(2):13-14.

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