【摘要】 采用振荡热压技术和热压技术制备了粉末高温合金FGH4096,研究了烧结压力对合金微观组织和拉伸性能的影响。结果表明，随着烧结压力的增加，样品致密度增加，原始颗粒边界(PPB)趋于严重，晶粒尺寸减小，大角度晶界和孪晶界出现的概率增大，室温拉伸性能提高。振荡烧结压力的引入有助于样品致密度的提高、PPBs缺陷的抑制、晶粒尺寸的减小、室温拉伸性能的显著提升，尤其是延伸率，可由26.1%增加至35.2%,增幅达35%,样品断裂模式由沿颗粒断裂为主变为沿颗粒与穿颗粒的混合断裂。更多还原

【Abstract】 Powder metallurgy FGH4096 is prepared by oscillating hot pressing technique and hot pressing technique. The effect of sintering pressure on the microstructure and tensile property of the alloy is investigated. The results show that with the increase of sintering pressure, the sample density increases, the prior particle boundary(PPB) becomes more serious, the crystal size decreases, the probability of the formation of large Angle crystal boundaries and twin boundaries increases, and thus the room temperature tensile property improves. The application of oscillating sintering pressure contributes to the increase of sample density, the suppression of PPB defects, the reduction of crystal size, and the significant improvement of room temperature tensile properties, especially the elongation, which can be increased from 26.1% to 35.2%, with an increase of 35%. The sample tensile fracture mode changes from inter-particle dominant fracture to inter-particle and trans-particle mixed fracture.更多还原