EFFECTS OF Ca ADDITIONON TiAl-BASED ALLOYS

来源期刊：中国有色金属学报(英文版)1997年第1期

论文作者：Cao Peng Huang Baiyun He Yuehui Qu Xuanhui

文章页码：143 - 146

Key words：TiAl based alloy ;alloying; mechanical properties; fracture

Abstract: The influences of Ca addition on the microstructure and room temperature mechanical properties of as cast TiAl based alloy were investigated.The results showed that Ca addition could improve markedly crystalline.the strength and ductility of TiAl at ambient temperature.Microstructure of Ca doped TiAl alloy was dendric crystalline.Fracture mode of Ti Al Ca ternary alloy was a mixed mode,including cleavage cracks vertical to lamellar direction and “river” pattern in γ single phase.In addition,a lot of tear ridges were found in the fractured surface.