时效及预拉伸变形对喷射成形2195铝锂合金性能和组织的影响  

Effects of Aging and Prestretching Deformation on Properties and Microstructure of 2195 Al-Li Alloy in Spray Forming

作　　者：高新宇[1] GAO Xin-yu(Northeast Light Alloy Co.,Ltd.,Harbin 150060,China)

机构地区：[1]东北轻合金有限责任公司,哈尔滨150060

出　　处：《铝加工》2020年第3期19-23,共5页Aluminium Fabrication

摘　　要：采用透射电子显微镜、拉伸试验等分析检测手段研究了用喷射成形2195铝锂合金铸锭挤压型材的预拉伸变形工艺和热处理工艺。结果表明,当预拉伸变形达到3%时,工艺能够满足型材力学性能的要求,型材的时效主要析出强化相为T1相、δ′相和θ′相。The prestretching deformation process and the heat treatment technology of the spray-formed profile of 2195 Al-Li alloy ingot were studied by transmission electron microscope and tensile test.The results show that mechanical properties of the profile are greatly affected by the process of prestretching deformation.When prestretching deformation reaches 3%,mechanical properties can meet the requirements of the target value.The strengthening phases precipitated in the aging process are mainly T1 phase,δ′phase andθ′phase.

关 键 词：2195铝锂合金 喷射成形 型材 预拉伸变形 

分 类 号：TG146.21[一般工业技术—材料科学与工程]