【摘要】 对Ｎｉ_５０Ａｌ_３０Ｆｅ_２０金属间化合物合金进行１～４ＧＰａ高压处理，发现随着处理压强增高，塑性应变量下降，由于在高压处理条件下样品滑移变形受周围叶蜡石挤压而受到抑制，微裂纹在晶内形核，测试时裂纹容易连通提前产生断裂，其断裂方向由铸态时与压缩轴成４５°，逐渐转变为在高压处理时断面与压缩轴垂直。更多还原

【Abstract】 i₅₀ Al₃₀ Fe₂₀ intermetallic alloy was treated by high pressure in the range of l～4GPa. It was foundthat the amount of plastic deformatiori decreased with increasing trcat pressure. The slip of the sample washindered by the compression of surrounding pyrophyllite under high pressure and microcracks nucleatedwithin the grain. The cracks are easy to connect during compression test and cause immature fracture. Thedirection of fracture surface changed gradually from 45°to the compression axis to perpendicular to thecompression axis.更多还原