Effect of HIPing time on the properties of TiAl alloys

来源期刊：中南大学学报(英文版)2002年第3期

论文作者：陈建勋 黄伯云

文章页码：145 - 149

Key words：HIPing time; TiAl alloy; properties

Abstract: The compacted TiAl alloys were prepared and the effects of HIPing time on their properties were studied. At 1 100℃, 80 MPa, the density ofTiAl alloy reached up to 3.46 g/cm3after 10 min HIPing. Thedensities of TiAl alloys did notsignificantly increasewiththe time increasingfrom10 min to 70 min. Under the experimental conditions, the TiAl alloys obtained is an unstable state alloy, and the effect of HIPing time on the TiAl phase is not significant. The micro-cracks appear in inner of TiAl alloy with the HIPing time increase. At 1 380℃, after one hour heat treatment, the micro-cracks disappear and the phase changes into stable state and its microstructure changs into lamella.