Effect of nitrogen addition on microstructures and mechanical propeties of TiAl based alloys

来源期刊：中国有色金属学报(英文版)1999年第4期

论文作者：唐建成 黄伯云 谢鲲 贺跃辉

文章页码：692 - 695

Key words：TiAl based alloys; microstructure; nitrogen addition; grain refinement

Abstract: Through adding 0 %-3 % (mole fraction) nitrogen in cast TiAl based alloys, it was found that colony size in cast condition decreased from 600 um to 58 um with nitrogen content increasing from zero to 1%and then decreased slowly with further increase of nitrogen content, tensile strength increased with nitrogen content; but comparing to the value of the mother alloy, tensile elongation at room temperature decreased in the alloy with 0. 5 % nitrogen, then recovered in the alloy with 1% nitrogen.