轧后退火时间对轧制ZK60镁合金显微组织及力学和阻尼性能的影响
Effect of Annealing Time after Rolling on Microstructure and Mechanical and Damping Properties of Rolled ZK60 Magnesium Alloy
朱嘉欣 1孙有平 2何江美 2谢尚恒 1方德俊1
作者信息
- 1. 广西科技大学机械与汽车工程学院,柳州 545006;广西科技大学广西土方机械协同创新中心,柳州 545006
- 2. 广西科技大学机械与汽车工程学院,柳州 545006;广西科技大学广西土方机械协同创新中心,柳州 545006;广西科技大学广西汽车零部件与整车技术重点实验室,柳州 545006
- 折叠
摘要
对大应变轧制态ZK60镁合金进行350 ℃退火处理,研究了退火时间(0～3 h)对其显微组织、阻尼性能和力学性能的影响.结果表明:随着轧后退火时间由0延长到3 h,ZK60镁合金发生静态再结晶的程度增大,平均晶粒尺寸由6.86μm增大至23.35 μm,位错密度由3.539 1×1015 m-2减小至1.336 8× 1015 m-2,(0002)基面织构强度由12.782弱化至1.715,抗拉强度由309 MPa降低到291 MPa,断后伸长率由22.60％增大到28.60％.在应变振幅小于0.01时,轧后退火处理对合金阻尼性能的影响较小;在应变振幅大于0.01时,随着退火时间的延长,轧后退火态合金的阻尼性能提升.
Abstract
Annealing at 350 ℃ was conduct on large-strain rolled ZK60 magnesium alloy,and the effect of annealing time(0-3 h)on the microstructure,damping properties and mechanical properties was studied.The results show that as the annealing time after rolling increased from 0 to 3 h,static recrystallization degree of ZK60 magnesium alloy increased,the average grain size increased from 6.86 μm to 23.35 μm,dislocation density decreased from 3.539 1× 1015 m-2 to 1.336 8 × 1015 m-2,(0002)base face texture strength decreased from 12.782 to 1.715,tensile strength decreased from 309 MPa to 291 MPa,and percentage elongation after fracture increased from 22.60％to 28.60％.When the strain amplitude was less than 0.01,the annealing after rolling had little influence on the alloy damping performance;when the strain amplitude was greater than 0.01,the damping performance of the annealed alloy after rolling increased with the extension of the annealing time.
关键词
ZK60镁合金/显微组织/力学性能/阻尼性能Key words
ZK60 magnesium alloy/microstructure/mechanical property/damping property引用本文复制引用
基金项目
中央引导地方科技发展专项项目(桂科ZY21195053)
广西高等学校高水平创新团队项目(桂教师范[2019]52号)
柳州市科技计划项目(2021CBA0102)
广西研究生教育创新计划项目(YCSW2021323)
出版年
2024
NETL
NSTL
万方数据