氢对Ti_3Al-Nb合金微观组织和超塑变形行为的影响  

Effect of Hydrogen on Microstructure and Superplastic Behavior of Ti_3Al-Nb Alloy

作　　者：丁桦[1] 王殿梁[1] 宋丹[1] 张彩碚[1] 崔建忠[1] 白秉哲[2] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110006 [2]清华大学材料科学与工程系,北京100084

出　　处：《钢铁研究学报》2000年第2期45-48,共4页Journal of Iron and Steel Research

基　　金：国家自然科学基金资助项目 !(59775058)

摘　　要：研究了氢对 Ti- 2 4Al- 14Nb- 3V- 0 .5 Mo合金微观组织和超塑变形的影响。结果表明 :氢可增加合金中 B2相的体积分数 ,促进变形过程中条状相晶粒的细化。氢的存在可降低合金在超塑变形过程中的流变应力 ,并在较低的温度下获得合金的最大The effect of hydrogen on microstructures and superplastic behavior of Ti 24Al 14Nb 3V 0.5Mo alloy was studied. The results showed that the addition of hydrogen increase the volume fraction of B2 phase and facilitate the refining of lath like phase. Due to the existence of hydrogen, the flow stresses of the alloy was decreased and the maximum m value was received at a lower temperature.

关 键 词：氢 TI3AL-NB合金 微观组织 超塑变形 钛合金 

分 类 号：TG146.2[一般工业技术—材料科学与工程]