李霞,王玉明,林建国,张德闯

• 1:湘潭大学材料科学与工程学院
• 2:低维材料及其应用技术教育部重点实验室

摘要(Abstract)：

采用扫描电镜(SEM)、X射线衍射(XRD)、透射电镜(TEM)、纳米压痕等分析测试手段,研究不同固溶温度对Ti55531钛合金微观组织和力学性能的影响。结果表明,合金的锻态组织由球状α相和β相组成,经过780℃和840℃固溶处理和540℃时效1 h后,合金的显微组织由初生α相、次生针状α相和β相组成,其中次生α相和β相存在位向关系,即(1101)α//(110)β;随着固溶温度增高,初生球状α相急剧减少,析出次生α相增多,而且次生针状α相硬度明显高于初生α相和基体β相,经780℃和840℃固溶处理后合金的硬度相对于锻态组织分别提高了8.5%和10.3%。

关键词(KeyWords)： Ti55531钛合金;微观组织;固溶时效;次生α相;硬度

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金青年项目(11402220);; 湖南省优秀博士后培养项目(2015RS4026);; 湖南省教育厅优秀青年项目(14B176);; 湖南省科技计划项目(2016JC2005)

作者(Author): 李霞,王玉明,林建国,张德闯

DOI: 10.13289/j.issn.1009-6264.2017.02.007

参考文献(References)：

• [1]付艳艳,惠松骁,叶文君,等.冷却速度对VST55531钛合金的显微组织和力学性能的影响[J].中国有色金属学报,2010,20(S1):685-689.FU Yan-yan,HUI Xiao-song,YE Wen-jun,et al.Effects of cooling rate on microstructure and properties of VST5531 alloy[J].The Chinese Journal of Nonferrous Metals,2010,20(S1):685-689.
• [2]Jones N G,Dashwood R J,Dye D,et al.Thermomechanical processing of Ti-5Al-5Mo-5V-3Cr[J].Materials Science and Engineering A,2008,(490):369-377.
• [3]Fanning J C,Boyer R R.Properties of Timetal555-A new near-beta titanium alloy for airframe components[C]//Lutjering G,Albrcht J.Ti-2003Science and Technology,Hamburg:DGM,2003:2643-2650.
• [4]Arrazola P J,Garay A,Iriate L M.Machinability of titanium alloys(Ti-6Al-4V and Ti5553)[J].Journal of Materials Processing Technology,2009,(209):2223-2230.
• [5]魏寿庸,祝瀑,王韦琪.Ti-5Al-5Mo-5V-1Cr-1Fe钛合金简介[J].钛工业进展,1998(4):8.WEI Shou-yong,ZHU Pu,WANG Wei-qi.Introduc-tion of Ti-5Al-5Mo-5V-1Cr-1Fe titanium alloy[J].Titanium Industry Progress,1998(4):8.
• [6]Black S.The rear pressure bulkhead for the Airbus A380 employs resin film infusion[J].High-performance Com-posites,2003,11(3):45-48.
• [7]Duret N.Titanium for damage tolerance applications on A380[C]∥In:Lutjering G,Albrecht J(eds).Ti-2003 Science and Technology,Hamburg:DGM,2003:2667.
• [8]Jéróme Pora.A380结构的先进材料和技术——未来发展的技术平台[J].航空维修与工程,2003,(6):50-52.Jéróme Pora.Advanced materials and technology for A380 structure[J].Aviation maintenance and Engineering,2003,(6):50-52.
• [9]曹春晓.一代材料技术,一带大型飞机[J].航空学报,2008,29(3):702-704.Cao Chun-xiao.One generation of material technology,one generation of large aircraf t[J].Acta Aeronautica et Astronautica Sinica,2008,29(3):702-704.
• [10]Dyson D J.X-Ray and Electron Diffraction Studies in Materials Science[M].London:Maney Publishing,2004:159.
• [11]宋振亚,孙巧艳,肖林,等.预变性对TB3合金时效析出行为及其力学性能的影响[J].稀有金属材料与工程,2010,39(5):793.SONG Zhen-ya,SUN Qiao-yan,XIAO Lin,et al.Influence of predeformation on aging precipitation behavior and mechanical properties of TB3[J].Rare Metal Materials and Engineering,2010,39(5):793.

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