(中南大學(xué) 粉末冶金國(guó)家重點(diǎn)實(shí)驗(yàn)室，長(zhǎng)沙 410083)
摘 要:
關(guān)鍵字: Mo-Ti合金；拉伸強(qiáng)度；相對(duì)密度；固溶強(qiáng)化；第二相粒子
（State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China）
Abstract:Mo-Ti alloy were fabricated by powder metallurgy process. The effects of adding forms and content of Ti on the tensile strength and microstructure of molybdenum were studied. The results indicate that the tensile strength of Mo-Ti alloy with TiH2 addition is much higher than that with pure Ti. The tensile strength achieves the highest value when the content of TiH2 is 0.8%. The microstructure analysis reveals that a part of the alloying element Ti solves into the Mo matrix, which enhances the tensile strength of the alloys, while the other part of Ti is combined with Mo and O in alloy to form second phase compounding oxide particles MoxTiyOz, which refines the grains and purifies the grain boundaries.
Key words: Mo-Ti alloy; tensile strength; relative density; solid solution; second phase particles
