欢迎登录材料期刊网

材料期刊网

高级检索

采用真空电弧熔炼技术制备了4种成分的Ti-Sc二元合金,并借助金相显微镜(OM)、扫描电子显微镜(SEM)、能谱分析(EDS)、X射线衍射(XRD)技术及显微硬度测试,对合金的组织形貌、相成分以及不同形貌相的显微硬度进行了分析.结果表明:合金铸态组织形貌为螺旋状、团簇状片层、双相组织;金属Sc对合金的组织有着明显的细化作用,在合金中Sc与Ti形成了固溶体,不同形貌的相,其显微硬度差别较大;当Sc含量为2%~3%时,Ti-Sc二元合金的显微硬度达到最高值,Sc含量高于2%~3%时,合金基体硬度高于片层组织硬度,Sc含量低于2%~3%时,合金基体硬度低于片层组织硬度,少量Sc对合金性能有所提高,对α相片层组织有强化作用.

参考文献

[1] 刘静安;吴煌良.钛合金手册[M].重庆:科学技术文献出版社重庆分社,1982
[2] 易宪武;黄春辉.钪稀土元素[M].北京:科学出版社,1998
[3] 潘道皑;赵成大;郑载兴.物质结构[M].北京:高等教育出版社,1989
[4] 胡赓祥;钱苗根.金属学[M].上海:上海科学技术出版社,1980
[5] V. G. Davydov;T. D. Rostova;V. V. Zakharov;Yu. A. Filatov;V. I. Yelagin .Scientific principles of making an alloying addition of scandium to aluminium alloys[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2000(1):30-36.
[6] Fuller CB.;Krause AR.;Dunand DC.;Seidman DN. .Microstructure and mechanical properties of a 5754 aluminum alloy modified by Sc and Zr additions[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2002(1/2):8-16.
[7] K.L. Kendig;D.B. Miracle .Strengthening mechanisms of an Al-Mg-Sc-Zr alloy[J].Acta materialia,2002(16):4165-4175.
[8] 张德尧.Al-Zn-Mg-Sc系热强可焊铝合金[J].稀有金属快报,2001(1):11-14.
[9] 余琨,李松瑞,黎文献,肖于德.微量Sc和Zr对2618铝合金再结晶行为的影响[J].中国有色金属学报,1999(04):709-713.
[10] 虞觉奇;易文质;陈邦迪.二元合金状态图集[M].上海:上海科学技术出版社,1987
[11] Sauer C;Lǖjering G .Influence of α layers at5grain boundaries on mechanical properties of Ti-alloys[J].Materials Science and Engineering A,2002,A319-321:393-397.
[12] Ding R.;Guo Z.;Wilson A. .Microstructural evolution of a Ti-6Al-4V alloy during thermomechanical processing[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2002(2):233-245.
[13] Flower H M .Microstructural development in relation to hot working of titanium alloys[J].Materials Science and Technology,1990,6:1082-1092.
[14] Ahmed T;Rack H J .Phase transformations during cooling in α+ β titannium alloys[J].Materials Science and Engineering A,1998,A243:206-211.
上一张 下一张
上一张 下一张
计量
  • 下载量()
  • 访问量()
文章评分
  • 您的评分:
  • 1
    0%
  • 2
    0%
  • 3
    0%
  • 4
    0%
  • 5
    0%