CAJ | 학술논문

将小规格TC16钛合金轧制棒材在780℃保温2 h，进行了不同炉冷出炉温度、不同第二级退火温度及不同冷却方式的热处理实验，分析了热处理前后棒材的显微组织和力学性能。结果表明：热处理前后棒材显微组织的差异较大；随着出炉温度的降低，强度和塑性均出现先升高后降低的现象，炉冷至530℃后空冷可得到较高的强度及良好塑性；第二级热处理温度越高，强度越低，同时塑性较高；在不同的冷却方式下，炉冷可获得最优的强度塑性匹配。
장소규격TC16태합금알제봉재재780℃보온2 h，진행료불동로랭출로온도、불동제이급퇴화온도급불동냉각방식적열처리실험，분석료열처리전후봉재적현미조직화역학성능。결과표명：열처리전후봉재현미조직적차이교대；수착출로온도적강저，강도화소성균출현선승고후강저적현상，로랭지530℃후공랭가득도교고적강도급량호소성；제이급열처리온도월고，강도월저，동시소성교고；재불동적냉각방식하，로랭가획득최우적강도소성필배。
Effects of heat treatment on microstructures and mechanical properties of TC 16 titanium alloy bars were studied, different heat treatment schedules were adopted and compared , such as furnace cooling to different tempera-tures, double annealing with different second annealing temperatures and different cooling rates after holding 2 h at 780 ℃.The results show that annealing treatment has great influence on the microstructure .Furnace cooling to the lower temperature , the strength and plasticity are ally first increased andthen decreased .With lower second annealing temperature, the lower strength and higher plasticity was adopted in the double annealing process .Comparing with other cooling methods , furnace cooling could get ideal match of strength and plasticity .