【作者】 肖代红； 袁铁锤； 贺跃辉； 王守仁；

【Author】 XIAO Dai-hong,YUAN Tie-chui,HE Yue-hui,WANG Shou-ren (State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410083,China)

【机构】 中南大学粉末冶金国家重点实验室；

【摘要】 采用元素混合法制备粉末冶金Ti-Al-Mo-V-Ag合金。通过X射线衍射、金相观察、扫描电镜及力学性能测试等方法,研究Ag的添加及烧结温度对基体合金的显微组织与力学性能影响,并对其作用机制进行探讨。结果表明:添加5%～10%Ag(质量分数)可提高基体合金的压坯成型性,最终使烧结合金的致密度与力学性能得到提高;Ti-5Al-4Mo-4V-5Ag合金经过1 250℃真空烧结4 h后,抗压缩强度及相对密度分别达到1 656 MPa及96.3%。更多还原

【Abstract】 The Ti-Al-Mo-V-Ag alloys were prepared by powder metallurgy using the blended elemental(BE) technique. The effects of Ag additions and sintering temperature on microstructure and properties of the based alloys were investigated using X-ray diffractometry,optical microscopy,scanning electron microscopy and mechanical properties tests.The results show that adding Ag element increases the relative density and improve the mechanical properties of powder metallurgy(P/M) Ti-5Al-4Mo-4V alloy.After sintering at 1 250℃for 4 h,the relative density and compression strength of P/M Ti-5Al-4Mo-4V-5Ag alloy are 96.3%and 1 656 MPa,respectively.更多还原