氢对热变形TC4钛合金显微组织的影响
Effect of Hydrogen on the Microstructure of Ti-6Al-4V Alloy by Hot Defromation
摘 要
研究了渗氢TC4钛合金热变形后及除氢处理后的显微组织.结果表明：渗氢TC4钛合金组织中的氢化物随氢含量增加逐渐长大:应变速率增加时,亚晶变形增加:除氢后由于动态回复亚晶界变得清晰光滑,亚晶内位错密度降低.
渗氢
热变形
显微组织
TC4 titanium alloy
hydrogenation
hot deformation
microstructure
Abstract
The both microstructures of hot deformation and dehydrogenation of TC4 alloy was researched in this paper.The result shows the hydrides content grows up with the increasing of hydrogen.The deformation of subgrain is increased with the increasing of deformation rate.The subgrain boundary become smoothly and the density of dislocation is decrease in subgrain because of dynamic-recover after dehydrogenation.
中图分类号 N34
所属栏目
基金项目 国家自然科学基金资助项目(50371021)
收稿日期 2006/7/27
修改稿日期 2007/3/26
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备注龚沛(1965-),男,内蒙古呼和浩特人,讲师,硕士.
引用该论文: GONG Pei,SUN Dong-li. Effect of Hydrogen on the Microstructure of Ti-6Al-4V Alloy by Hot Defromation[J]. Materials for mechancial engineering, 2007, 31(6): 69～72
龚沛,孙东立. 氢对热变形TC4钛合金显微组织的影响[J]. 机械工程材料, 2007, 31(6): 69～72
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参考文献
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【2】Senkov O N,Froes F H.Thermohydrogen processing of titanium alloys[J].International Journal of Hydrogen Energy,1999,24(6):565-576.
【3】Hirofumi Yoshimura,Kin’ichi Kimura,Masayuki Hayashi,et al.Ultra-fine equiaxed grain refinement and improvement of mechanical properties of (α+β) type titanium alloys by hydrogenation[J].Hot Working,Heat Treatment Materials Transactions,JIM,1994,35(4):266-272.
【4】Murzinova M A,Mazurski M I,Salishchev A,et al.Application of reversible hydrogen alloying for formation of submicrocrystalline structure in (α+β) titanium alloys[J].International Journal of Hydrogen Energy,1997,22(2/3):201-204.
【5】Zhang Y,Zhang S Q.Hydrogenation characteristics of Ti-6Al-4V cast alloy and its microsoftructural modification by hydrogen treatment[J].International Journal of Hydrogen Energy,1997,22(2/3):161-168.
【6】Fang Tun-Ying,Wang Wen-Hsiung.Microstructural features of thermochemical processing in a Ti-6Al-4V alloy[J].Materials Chemistry Physics,1988,56:35-47.
【7】Kohn D H,Ducheyne P.Microstructural refinement of β-sintered and Ti-6Al-4V porous-coated by temporary alloying with hydrogen[J].Journal of Materials Science,1991(26):534-544.
【8】Senkov O N,Jonas J J,Froes F H.Recent advances in the thermohydrogen processing of titanium alloys[J].JOM,1996,21(6):42-47.
【9】Shaoqin Zhang,Linruo Zhao.Efect of hydrogen on the superplasticity and microstructure of Ti-6Al-4V alloy[J].Journal of Alloys and Compounds,1995,218:233-236.
【10】任大鹏,邹觉生.不锈钢充氚后的微观组织研究[J].机械工程材料,2002,26(8):15-17.
【11】Wang Wei E.Thermodynamic evaluation of the titanium-hydrogen system[J].Journal of Alloys and Compounds,1996,238:6-12.
【12】丁伟,魏澎,赵国,等.TiHx中H的热释放行为研究[J].核技术,1998,21(10):586-589.
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