陈永楠,魏建锋,赵永庆,屈可朋,王慧

• 1:西安交通大学金属材料强度国家重点实验室
• 2:西北有色金属研究院

摘要(Abstract)：

以新型阻燃合金Ti14合金(α+Ti2Cu)为对象,研究了Ti合金在固态和半固态变形的组织演变过程,分析了温度和变形量对合金晶粒形态和晶界特征的影响,结果表明:半固态条件下未发生动态再结晶,使得晶粒粗大,温度影响了液相的析出,随着温度的升高,液相析出量增加,并集中在晶界处,使得晶界宽化,由不连续转变为连续分布;变形量改变了晶界的界面能,促使晶界发生迁移和转动,导致弯曲的晶界向其曲率中心方向移动,三叉晶的交角向120°趋近。

关键词(KeyWords)： 钛合金;Ti14合金;半固态变形;显微组织;变形机制

Abstract:

Keywords:

基金项目(Foundation): 重大基础研究前期研究专项项目(2005CCA06400);; 国家“863”项目(2002AA336040)

作者(Author): 陈永楠,魏建锋,赵永庆,屈可朋,王慧

参考文献(References)：

• [1]Iwashita C H,Wei R P.Coarsening of grain boundary carbides in nickl-based ternary alloy during creep[J].Acta Mter,2000,48:3145-3156.
• [2]宋余九.金属的晶界与强度[M].西安:西安交通大学出版社,1986.
• [3]Ringeval S,Piot D.Texture and microtexture development in an Al-3Mg-Sc(Zr)alloy deformed by triaxial forging[J].Acta Mater,2006,54:3095-3105.
• [4]Sergiy Divinski,Jens Ribbe,Grain boundary diffusion and segregation of Ni in Cu[J].Acta Mater,2007 55:3337-3346.
• [5]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.
• [6]Chino Y,Kobata M,Iwasaki H.An investigation of compressive deformation behavior for AZ91 Mg alloy containing a small volume of liquid[J].ActaMaterialia,2003,51:3309-3318.
• [7]Eskin D G,Suyitno,Katgerman L.Mechanical properties in the semi-solid state and hot tearing of aluminium alloys[J].Progress in Materials Sience,2004,49:629-711.
• [8]Mohamed Ramadan,Mitsuharu Takita,Hiroyuki Nomura.Semi-solid processing of ultrahigh-carbon steel castings[J].Materials Science and Engineering A,2006,430:285-291.
• [9]ZHAO Y Q,ZHU K Y,ZHAO X M.Low coast burn resistant titanium:Chinese Patent,ZL 97112302.0[P].1997.
• [10]ZHAO Y Q,WU W L,MA X D,Semi-solid oxidation and deformation behavior of Ti14 alloy[J].Materials Science and Engineering A,2004,373:315-319.
• [11]ZHAO Y Q,WU W L,CHANG H.Research on microstructure and mechanical properties of a newα+Ti2Cu alloy after semi-solid deformation[J].MaterialsScience and Engineering A,2006,416::81-186.
• [12]Ringeval S,Piot D.Texture and micro texture development in an Al-3Mg-Sc(Zr)alloy deformed by triaxial forging[J].Acta Mater,2006,54:3095-3105.
• [13]Eskin D G,Suyitno L.Katgerman mechnical properties in the semi-solid state and hot tearing od aluminium alloys[J].Progress in Materials Sience,2004,49:629-711.

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