交叉包套轧制Ti-44Al-5Nb-1Mo-2V-0.2B合金的微观组织演化及力学性能

王秀琦, 李天瑞, 刘国怀, 郭瑞琪, 王昭东

Microstructure Evolution and Mechanical Properties of Ti-44Al-5Nb-1Mo-2V-0.2B Alloys in the Cross Hot-Pack Rolling Process

WANG Xiuqi, LI Tianrui, LIU Guohuai, GUO Ruiqi, WANG Zhaodong

表1 TNM-VB合金在不同轧制和退火热处理工艺下室温和800℃的拉伸性能

Table 1 Room-temperature (RT) and high-temperature (800oC) tensile properties of TNM-VB alloys in different rolling and annealing treatment processes

Specimen Direction RT 800oC UTS / MPa δ / % YS / MPa UTS / MPa δ / % Homogenized treatment 603 0.14 515 620 4.1 UHPR TD 754 0.89 460 593 100.4 RD 737 0.32 458 568 74.1 CHPR RD1 749 0.48 422 582 65.6 RD2 756 1.16 458 541 60.8 Annealing treatment (1200oC) RD2 624 1.32 424 515 107.0 Annealing treatment (1240oC) RD2 634 1.06 424 521 80.4