冷間圧延した Ti-20V-4Al-1Sn 合金における圧下率と組織形態および機械的性質との関係

抄録

  This study was conducted to investigate the relationship of rolling reduction with the microstructure and mechanical properties of cold-rolled Ti-20V-4Al-1Sn alloy. Cold rolling was performed under the rolling reduction between 10-50%. The microstructure was compressed by cold rolling, and became finer. Plastic deformation was partially inhomogeneous in the thickness direction of the cold-rolled material. The preferred orientation of the formed crystallographic texture was {112}〈110〉~{001}〈110〉 which is typical in metals possessing the bcc structure. The texture evolved with increasing rolling reduction. Hardness and static strength were increased by increase in rolling reduction because of work hardening and microstructural refinement. Anisotropy was induced in yield strength and work hardening exponent by cold rolling; however, it was not marked in hardness and tensile strength.