摘要
采用扫描电镜、金相显微镜观察多重固溶时效热处理Ti-53合金板材的显微组织,并研究其室温力学性能。结果表明,随着循环热处理次数的增多,次生α片层的数量先增多而后减少,强度、硬度和塑性均先升高至峰值后开始下降,在二重固溶时效热处理时达到最大值。采用适当的多重固溶时效处理可以有效地调节材料的显微组织参数,使得一定区域内具有相同柏氏位向关系的马氏体片层发生合并,具有不同柏氏位向关系的马氏体片层发生分解,从而实现合金强度与塑韧性的良好配合。
Effects of multiple solution and aging treatment on mierostructure and mechanical properties of Ti-53 alloy were studied by SEM and OM. The results show that the quantity of secondary a lamella, strength, hardness, and plasticity increase to the peak values and then decrease with the increase of the times of multiple solution and aging treatment. It is found that the best mechanical properties are obtained for the alloy after double solid solution and aging treatment. Proper process of multiple solution and aging treatment can make martensite lamellae with same Burgers vector merge and with different Burgers vector decompose, and the excellent combination of strength and plasticity is obtained for the alloy after the heat treatment.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2013年第9期140-144,共5页
Transactions of Materials and Heat Treatment
关键词
Ti-53合金
多重固溶时效处理
显微组织
力学性能
Ti-53 alloy
multiple solution and aging treatment
microstructure
mechanical property
