摘要
为了探索热处理优化电弧增材镁合金阻尼性能的方案,对TIG电弧增材AZ31镁合金进行了去应力退火和完全退火4、5 h处理,并对原始试样和退火后的试样微观组织、阻尼性能和力学性能进行了对比分析。研究表明:与原始增材试样相比,所有退火后的试样在低振幅下的阻尼性能均有所下降,当振幅超过20μm后阻尼性能有所提升;但去应力退火试样在超过20μm后的阻尼性能提升较小,完全退火4、5 h试样的阻尼性能相近,均比原始增材试样有所提升,表明退火时长对阻尼性能影响不大。在力学性能方面,去应力退火和完全退火4 h的试样的抗拉强度与原始试样相差不大,完全退火5 h的试样略有下降,去应力退火试样的伸长率与原始试样的伸长率相差不大,但是完全退火试样的伸长率均得到了提升。
In order to explore the scheme of heat treatment to optimize the damping property of arc additive magnesium alloy,stress relief annealing and full annealing for 4 h and 5 h were carried out for TIG arc additive AZ31 magnesium alloy,and the microstructure,damping properties and mechanical properties of the original sample and the annealed samples were compared and analyzed.The results show that compared with the original sample,the damping property of all annealed samples are reduced at low amplitude,when the amplitude exceeds 20μm,the damping performance is improved.However,the damping property of the stress relief annealed sample is improved less after 20μm,the damping property of the samples annealed for 4 h and 5 h is similar and higher than that of the original samples,which shows that the annealing time has little effect on the damping property.In terms of mechanical properties,the tensile strength of the stress relief annealed sample and the sample full annealed for 4 h is similar to the original sample,and the tensile strength of the sample after full annealed for 5 h has slightly decreased.The elongation of the sample after stress relief annealing has little difference with that of the original specimen,but the elongation of the sample after full annealing increases.
作者
战英扬
范霁康
倪程
罗晓宇
杨东青
王克鸿
ZHAN Yingyang;FAN Jikang;NI Cheng;LUO Xiaoyu;YANG Dongqing;WANG Kehong(Key Laboratory of Controlled Arc Intelligent Additive Technology,Ministry of Industry and Information Technology,Nanjing University of Technology,Nanjing 210094,China;Kunshan Huaheng Welding Co.,Ltd.,Kunshan 215300,China)
出处
《热加工工艺》
北大核心
2024年第20期37-41,共5页
Hot Working Technology
基金
国防基础科研计划项目(JCKY2018606BXXX)
中央高校基本科研业务费专项资金资助(2023303004,30922010921)。
关键词
AZ31镁合金
电弧增材
退火处理
阻尼性能
力学性能
AZ31 magnesium alloy
arc additive
annealing treatment
damping performance
mechanical properties
