商国强,朱知寿,寇宏超,王新南,费跃,常辉,李金山

• 1:北京航空材料研究院
• 2:西北工业大学凝固技术国家重点实验室

摘要(Abstract)：

研究了形变温度、形变量以及双重时效工艺对Ti-10V-2Fe-3Al合金显微组织和力学性能的影响。结果表明:随着形变温度的提高,在时效过程中析出的次生α相含量逐渐增加,合金强度升高;然而,当形变温度高于相变点时,初生α相对β晶粒的钉扎作用明显减弱,使得β晶粒迅速长大,导致合金的拉伸塑性明显下降;次生α相的体积分数主要决定于形变温度,因此应变量对Ti-10V-2Fe-3Al合金力学性能的影响较小。此外,相对于单重时效工艺,由于在低温时效(300℃×8 h)时发生ω→α转变,为次生α相提供了均匀的形核点,Ti-10V-2Fe-3Al合金在低温-高温双重时效工艺中获得了更加均匀、细小的α+β显微组织,使得拉伸强度获得比较大的提高。

关键词(KeyWords)： Ti-10V-2Fe-3Al合金;时效工艺;显微组织;力学性能

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 商国强,朱知寿,寇宏超,王新南,费跃,常辉,李金山

DOI: 10.13289/j.issn.1009-6264.2013.03.022

参考文献(References)：

• [1]Weiss I,Semiatin S L.Thermomechanical processing of beta titanium alloys-an overview[J].Mater Sci Eng.A,1998,243:46-65.
• [2]Karasevskaya O P,Ivasishin O M,Semiatin S L,et al.Deformation behavior of beta-titanium alloys[J].Mater Sci Eng A,2003,354:121-132.
• [3]Boyer R R.Ti-10V-2Fe-3Al Properties,Beta Titanium Alloys in the1980’s[M].Boyer R R and Rosenberg H W,Ed,Metallurgical Society of AIME,1984:441-456.
• [4]Welsh G,Boyer R R.Materials Property Handbook:Titanium Alloys[M].ASM International USA,1994:1051-1060.
• [5]Boyer R R,Briggs R D.The use ofβtitanium alloys in the aerospace industry[J].Journal of Materials Engineering and Performance,2005,14(6):681-685.
• [6]Raghunathan S L,Stapleton A M,Dashwood R J,et al.Micromechanics of Ti-10V-2Fe-3Al:In situ synchrotron characterisation and modeling[J].ActaMaterialia,2007,55:6861-6872.
• [7]Furuhara T,Maki T,Makino T.Microstructure control by thermomechanical processing inβ-Ti-15-3alloy[J].Journal of Materials ProcessingTechnology,2001,117:318-323.
• [8]Jackson M,Dashwood R,Christodoulou L,et al.The microstructural evolution of near beta alloy Ti-10V-2Fe-3A1during subtransus forging[J].Metallurgical and Materials Transactions A,2005,36:1317-1327.
• [9]Robertson D G,McShane H B.Isothermal hot deformation behavior of metasTableβtitanium alloy Ti-10V-2Fe-3A1[J].Marer Sci Technol,1997,13:575-582.
• [10]Wang Bo,Liu Ziquan,Gao Yuan,et al.Microstructural evolution during aging of Ti-10V-2Fe-3Al titanium alloy[J].Journal of University of Scienceand Technology Beijing,2007,14(4):335-340.
• [11]Bhattacharjee A,Varwa V K,Kamat S V,et al.Influence ofβgrain size on tensile behavior and ductile fracture toughness of titanium alloy Ti-10V-2Fe-3Al[J].Metallurgical and Materials Transactions,2006,37(5):1423-1433.
• [12]Wood J P,Russo P A,Welter M F,et al.Thermomechanical processing and heat treatment of Ti-6Al-2Sn-2Zr-2Cr-2Mo-Si for structural applications[J].Mater Sci Eng A,1998,243:109-118.
• [13]Nyakana S L,Fanning J C,Boyer R R.Quick reference guide forβtitanium alloy in the00s[J].Journal of Materials Engineering and Performance,2005,14(6):799-811.
• [14]Clément N,Lenain A,Jacques P J.Mechanical property optimization via microstructural control of new metasTable beta titanium alloys[C]//Processing and Characterizing Titanium Alloys,JOM,January,2007:50-53.
• [15]Sauer C,Luetjering G.Thermo-mechanical processing of high strengthβ-titanium alloys and effects on microstructure and properties[J].Journal ofMaterials Processing Technology,2001,117:311-317.
• [16]Compilation Council.Forging Technology Hand book[M].Beijing:National Defence Industry Press,1989:1-472.
• [17]Ivasishin O M,Markovsky P E,Matviychuk Yu V,et al.A comparative study of the mechanical properties of high-strengthβ-titanium alloys[J].Journal of Alloy and Compounds,2007(14):1-14.
• [18]Ivasishin O M,Markovsky P E,Semiatin S L,et al,Aging response of coarse-and fine-grainedβtitanium alloys[J].Mater Sci Eng A,2005,354:296-305.
• [19]Duerig T W,Williams J C.Beta Titanium Alloys in the80s[M],TMS,Warrendale,PA,1984:19-67.
• [20]Boyer R R,Welsch G,Collings E W.Materials Properties Handbook:Titanium Alloys[M].ASM International,The Materials Information Society,USA,1994:485-632,685-865.
• [21]Ohmori Yasuya,Ogo Toshitaka,Nnnik Kiyomichi,et al.Effects ofω-phase precipitation onβ→α,α″transformations in a metasTableβtitanium alloy[J].Mater Sci Eng A,2001,312:182-188.
• [22]Nag S,Banerjee R,Srinivasan R,et al.ω-Assisted nucleation and growth of a precipitates in the Ti-5Al-5Mo-5V-3Cr-0.5Feβtitanium alloy[J].ActaMaterialia,2009,57:2136-2147.

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