期刊论文

Effect of Pretreatment on Creep Behavior and Mechanical Properties of 2219 Aluminum Alloy

中文

宇航材料工艺

1007-2330

2020

50

02

44-47

10.12044/j.issn.1007-2330.2020.02.008

2016年益阳市指导性科技计划项目（项目编号：益科字[2016]51号29）；

本校为第一机构

为了研究不同预变形量对铝合金蠕变行为及力学性能的影响规律.以2219铝合金为研究对象,在温度为175℃,180 MPa应力条件下,研究0～8％的预变形量对2219铝合金蠕变行为及力学性能的影响.结果 表明:预变形处理的引入,材料的蠕变变形量和力学性能大幅度增加.当预变形处理量为1％时,其蠕变变形量较未处理时试样蠕变变形量增加了118％.而随着预变形量的继续增加,试样的的力学性能呈现快速下降的变化趋势.综合考虑蠕变变形量与力学性能时,最利于构件的蠕变时效成形的2219铝合金的预变形处理量为3％.

In order to study the effects of different pre-deformation on creep behavior and mechanical properties of aluminum alloy,the 2219 aluminum alloy was taken as example.Under condition of 175 ℃ and 180 MPa,creep behavior and mechanical properties of 2219 aluminum alloys with 0 to 8% pre-deformation after creep aging were investigated.The results show that the creep deformation and mechanical properties of materials increase greatly with the introduction of pre-deformation treatment.When the pre-deformation treatment is 1%,the creep deformation of...