【摘要】 研究了高能球磨与热压烧结制备TiAl基合金的工艺。结果表明:在同一热压烧结工艺下,球磨时间越长,烧结试样的密度越大。以球磨40 h的粉末为原料,经1 300℃热压烧结可获得密度高达3.971 g/cm3的近全致密的TiAl基合金,且得到的TiAl基合金晶粒较小,组织均匀。更多还原

【Abstract】 TiAl-based alloys were prepared by high-energy ball-milling and hot-pressing sintering.With the milling time increasing,the densities of the alloys became higher in the same process of hot-pressing sintering.The density of the TiAl alloy with near-full density obtained by hot-pressing sintering at 1 300 ℃ from the powder milled for 40 h is 3.971 g/cm3.Homogeneous microstructure of TiAl-based alloys with fine grains is obtained.更多还原