研究了时效对一种新型Ti-6Cr-5Mo-5V-4A1合金组织与拉伸性能的影响.研究发现:Ti-6Cr-5Mo-5V-4Al合金在α/β固溶+时效处理后的典型组织为:β晶粒破碎,β晶界处有连续和不连续的项链状初生α相,晶内有不连续的球状初生α相及时效过程析出纵横交错的细小次生α相β固溶+时效处理后的典型组织为:等轴β晶粒晶界处析出沿着一定取向的次生α相薄片层,晶内弥散分布着平行交错的细小次生α相;在本研究范围内,Ti-6cr-5Mo-5V-4Al合会经β固溶+时效处理时,低于500℃长时间时效和高于500℃短时间时效有利于合金强化; α/β同溶+时效处理时,低于500℃短时间时效有利于合金强化,而高于500℃或长时间都会降低合金强度,而且在较宽的时效温度范围内都具有良好的强度塑性匹配.Ti-6Cr-5Mo-5V-4AI合金在低于500℃时效时α/β固溶+时效处理的合金其强度塑性匹配优于β固溶+时效处理处理后的合金;高于500℃时效时,β固溶+时效处理后合金其强度塑性匹配优于α/β固溶+时效处理后的合金.另外,短时间直接时效可以迅速提高合金强度,同时保持优良的塑性,500℃/2 h直接时效后强度达1590 MPa,同时保持6.5%的延伸率.
参考文献
| [1] | 尤振平,叶文君,惠松骁,于洋,王希哲,张翥.TB10钛合金的动态力学性能及绝热剪切分析[J].稀有金属,2008(06):799-802. |
| [2] | Boyer R R.An overview on the use of titanium in the aerospace industry[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,1996(213):103. |
| [3] | 娄贯涛.钛合金的研究应用现状及其发展方向[J].钛工业进展,2003(02):9-13. |
| [4] | 邵娟.钛合金及其应用研究进展[J].稀有金属与硬质合金,2007(04):61-65. |
| [5] | 付艳艳,宋月清,惠松骁,米绪军,叶文君,于洋.β钛合金的强韧化机制分析[J].稀有金属,2009(01):92-95. |
| [6] | 汶建宏,杨冠军,葛鹏,毛小南,赵映辉.β钛合金的研究进展[J].钛工业进展,2008(01):33-39. |
| [7] | 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 |
| [8] | Leyens C;Peters M.Titanium and Titanium Alloys[M].北京:化学工业出版社,2005 |
| [9] | 汪建林.高强度β钛合金的发展和应用[J].上海钢研,2001(02):25-33. |
| [10] | Ankem S;Greene C A.Recent development s in microstructure/property relationships of beta titanium alloys[A].北京:万国学术出版社,1999:487. |
| [11] | Hemant Sharma;Stefan M.C. van Bohemen;Roumen H. Petrov .Three-dimensional analysis of microstructures in titanium[J].Acta materialia,2010(7):2399-2407. |
| [12] | Wagner L;Gregory J K.Improvement of mechanical behavior in Ti-3Al-SV-6Cr-4Mo-4Zr by duplex aging[A].Warrendale:TMS,1993:199. |
| [13] | Ferrero J G;Wood J R;Russe P A.Relationships in bar produets of Beta-C(Ti-3Al-8V-6Cr-4Mo-4Zr)[A].Warrendale:TMS,1993:211. |
| [14] | Wang Bo;Li Ziquan.Microstructural evolution during aging of Ti-IOV-2Fe-3AI titanium alloy[J].Journal of University of Science and Technology Beijing Mineral Metallurgy Material,2007(14):335. |
| [15] | Ivasishin O M;Markovsky P E .Aging response of coarse-and fine-grained titanium alloys[J].Materials Science and Engineering,2005,A405:296. |
| [16] | Nag S A;Banerjee R;Srinivasan R;Omega-Assisted.Assisted nucleation and growth of a precipitates in the Ti-5Al-SMo-5V-3Cr0.5Fe titanium alloy[J].Acta Materialia,2009(57):2136. |
| [17] | Jones N G;Dashwood R J;Jackson M;Dye D.Phase decomposition in Ti-5Al-5Mo-5V-3Cr[J].Acta Materialia,2009(57):3830. |
| [18] | Fujii H;Suzuki H G.Effects of solution treatment conditions on the aging response in Ti-15V-3Cr-3Sn-3Al[A].Warrendale:TMS,1993:249. |
| [19] | SOng Z Y;Sun Q Y;Xiao L;Liu L,Sun J.Effect of prestrain and aging treatment on microstructures and tensile properties of Ti-IOMo-SV-1Fe-3.5Al alloy[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2010(527):691. |
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