Microstructure and mechanical properties of low and heavy alloyed 纬-TiAl聽+聽伪₂-Ti₃Al based alloys subjected to different treatments

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• 作者：V. Imayev^a ; T. Oleneva^a ; ^{oleneva-t@mail.ru} ; R. Imayev^a ; H.-J. Christ^b ; H.-J. Fecht^c
• 关键词：A. Titanium aluminides ; based on TiAl ; D. Microstructure ; F. Mechanical testing
• 刊名：Intermetallics
• 出版年：2012
• 期刊代码：36_09669795
• 类别：ms
• 出版时间：July, 2012
• 卷：26
• 期：Complete
• 页码：91-97
• 文件大小：1063 K

摘要

The microstructure and mechanical properties of the cast Ti-43.7Al-3.2(Nb,Cr,Mo)-0.2B alloy and聽a Ti-45Al-8Nb-0.2C alloy after hot extrusion followed by heat treatment were studied in the present work. The hot-worked alloy showed appreciably higher strength/ductility properties at room temperature as compared with those of the cast alloy. The difference in the mechanical properties gradually decreased with increasing the test temperature. At 750聽掳C similar strength/ductility properties as well as long-term strength were obtained for both alloys.