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采用粉末冶金方法（Ｐ／Ｍ）完成了ＳｉＣ颗粒增强ＬＹ１２的成形工艺和不同重量百分比条件下的力学性能实验。测试表明，含ＳｉＣ＿ｐ２０％（ｗｔ）的复合材料在室温下平均抗拉强度可达５９４ＭＰａ，延伸率为６％。其抗拉强度比ＬＹ１２ＣＺ提高３０％；２００℃拉伸时σ＿ｂ＝４９３ＭＰａ；３１５℃时σ＿ｂ＝２９９ＭＰａ。用扫描电镜及光学显微镜观察了ＬＹ１２粉末和试样断口的组织形貌。
Using the powder metallurgy method (P / M), the forming process of SiC particle reinforced LY12 and the mechanical property experiment under different weight percentages were completed. The results show that the composite containing SiC_p20% (wt) at room temperature, the average tensile strength of up to 594MPa, elongation 6%. Its tensile strength is 30% higher than LY12CZ; σ_b = 493MPa at 200 ℃ and σ_b = 299MPa at 315 ℃. Scanning electron microscopy and optical microscopy LY12 powder and specimen fracture morphology.