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研究了α+β两相区变形时不同应变量下,TC21合金的微观组织演变过程及拉伸性能变化规律。结果表明,应变量对初生α相的形态有显著影响;随应变量的增大,初生α相的形态由短棒状逐渐转变为等轴状;初生α相含量逐渐减少;初生α相等轴化程度越高、含量越多将有利于提高合金的强度;球化及针状的次生α相对提高合金强度有利,而片层状次生α相则使合金强度降低;确定了合金初生α相球化程度最好和含量最高的应变量在6.0附近。
The microstructure evolution and tensile properties of TC21 alloy were investigated under different strain amounts in the α + β two-phase zone. The results show that the strain has a significant effect on the morphology of the primary α phase. The morphology of the primary α phase gradually changes from short rod to equiaxed shape with the increase of the dependent variable; the content of primary α phase decreases gradually; The higher the content, the more the content will help to improve the strength of the alloy; spheroidization and acicular secondary α relative to improve the strength of the alloy, while the lamellar secondary α phase will reduce the alloy strength; determined alloy primary α phase ball The best and highest level of response is around 6.0.