Ti-Cr-V-Al合金的显微组织与热处理制度的关系  

Relationship between Microstructure of TiCrVAl Alloy and Heat Treatment Regime

作　　者：刘玉芹[1] 白克武[1] 张翥[1] 沈剑韵[1] 

机构地区：[1]北京有色金属研究总院

出　　处：《稀有金属》1999年第4期289-292,共4页Chinese Journal of Rare Metals

摘　　要：利用ＸＲＤ、ＴＥＭ、ＥＤＳ和光学显微镜等方法研究了ＴｉＣｒＶＡｌ合金的显微组织与热处理制度的关系，并从热力学的角度揭示了α相的析出行为。研究结果表明ＴｉＣｒＶＡｌ合金中有α相、碳化物相和硅化物相析出。Microstructures of TiCrVAl alloy heattreated at different temperatures are characterized by XRD, TEM,EDS and optical microscopy. The precipitation behavior of phase is explained by thermodynamic calculation. Experimental results show that phase, carbides and titanium silicates are precipitated in the matrix in the TiCrVAl alloy. The amount of phase is much less than that of thermodynamic calculation results due to very small driving forces of phase precipitating from the matrix.

关 键 词：显微组织 飞机发动机 钛合金 热处理制度 

分 类 号：V252.2[一般工业技术—材料科学与工程] TG166.5[航空宇航科学与技术—航空宇航制造工程]