半固态加工Ti14阻燃合金的高温拉伸性能和断口特征

陈永楠; 魏建锋; 赵永庆; 屈可朋; 王慧

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航空材料学报 ›› 2008, Vol. 28 ›› Issue (6) : 41-45.

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论文

半固态加工Ti14阻燃合金的高温拉伸性能和断口特征

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High Temperature Tensile Properties and Facture Character of Ti14 Alloy after Semi-Solid Deformation

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摘要

以新型阻燃合金Ti14为研究对象,通过力学性能测试和断口分析等方法对比研究了合金常规加工和半固态加工后,试样在不同温度区间的宏观力学行为,分析了断口的宏观、微观形貌及断裂机制。结果表明:半固态加工试样300℃以下拉伸,表现出高强度、低塑性特征,400℃以上拉伸两种加工方法的强度和塑性非常接近;半固态高温断口特征表现为韧性断裂,宏观断口存在明显的二次裂纹。

Abstract

The tensile properties of Ti14,a new typical α+Ti2Cu alloy,after solid and semi-solid forging(SSF) were researched at high temperature.The fractography of specimens were analyzed by SEM.The fracture mechanisms of Ti14 alloy were studied.One kind of the specimens were processed by SSF showed high strength and low ductility under 300℃,and the other kind of the specimens were processed by two methods performed same tensile properties at high temperatures.The fractography of Ti14 alloy after SSF showed a feature of ductile fracture,and much microcracks were detected in fracture surface.

导出引用

陈永楠, 魏建锋, 赵永庆, 屈可朋, 王慧. 半固态加工Ti14阻燃合金的高温拉伸性能和断口特征[J]. 航空材料学报, 2008, 28(6): 41-45

CHEN Yong-nan, WEI Jian-feng, ZHAO Yong-qing, QU Ke-peng, WANG Hui. High Temperature Tensile Properties and Facture Character of Ti14 Alloy after Semi-Solid Deformation[J]. Journal of Aeronautical Materials, 2008, 28(6): 41-45

参考文献

张喜燕,赵永庆.钛合金及应用[M].北京:化工出版社2005:287-293.
MABUCHI M,IWASAKI H,HIGASHI K.An investigation of shear deformation in a semi-solid state of a high strain rate superplastic Si3N4p/Al-Mg-Si composite[J].Acta mater 1998,46:5335-5343.
CHINO Y,KOBATA M,IWASAKI H.An investigation of compressive deformation behavior for AZ91 Mg alloy containing a small volume of liquid[J].Acta materialia 2003,51:3309-3318.
PǜTTGEN W,HALLSTEDT B,BLECK W.et al.On the microstructure formation in chromium steels rapidly cooled from the semi-solid state[J].Acta Materia] ia,In Press,Corrected Proof,Available online 29 November 2006.
RAMADAN Mohamed,TAKITA Mitsuharu,NOMURA Hiroyuki.Semi-solid processing of ultrahigh-carbon steel castings[J].Materials Science and Engineering(A),2006,430:285-291.
ZHAO Y Q,WU W L,MAX D.Semi-solid oxidation and deformation behavior of Ti14 alloy[J].Materials Science and Engineering(A),2004,373,315-319.
ZHAO Y Q,WU W L.Research on microstructure and mechanical properties of a new α+ Ti2Cu alloy after semisolid deformation[J].Materials Science and Engineering(A),2006,416:181-186.
赵永庆,朱康英.Ti14新型阻燃合金[P].中国专利ZL97112302.0.
赵永庆,朱康英.Ti-Cu-Al合金的阻燃特性和微观组织[J].稀有金属材料与工程,1998(6):30.
CHEN C P,TSAO CY A.Semi-solid deformation of nondendritic struetures-Ⅰ,phenomenological behavior[J].Acta Mater,1997,45(5):1955-1968.
刘瑞堂,刘文博.工程材料力学性能[M].哈尔滨:哈尔滨工业大学出版社,2001:113-118.
宋余九.金属的晶界与强度[M] 西安:西安交通大学出版社,1986:11-17.
马雪单,赵永庆.Ti14钛合金半固态下的变形行为研究[J].稀有金属材料与工程,2004 33(4):385-388.