形变退火工艺对2024铝合金性能的影响  

Influence of Deformation Annealing on Properties of 2024 Aluminum Alloy

作　　者：肖可谋 蹇海根[1,2] 陈淼 牌君君 伍江瑶 杨曼 XIAO Kemou;JIAN Haigen;CHEN Miao;PAI Junjun;WU Jiangyao;YANG Man(College of Materials and Advanced Manufacturing,Hunan University of Technology,Zhuzhou Hunan 412007,China;OKE CNC Precision Tool Co.,Ltd.,Zhuzhou Hunan 412500,China;Shandong Key Laboratory of Advanced Aluminum Materials and Technology,Binzhou Shandong 262207,China)

机构地区：[1]湖南工业大学材料与先进制造学院,湖南株洲412007 [2]株洲欧科亿数控精密刀具股份有限公司,湖南株洲412500 [3]山东省先进铝基材料与技术重点实验室,山东滨州262207

出　　处：《湖南工业大学学报》2024年第4期98-106,共9页Journal of Hunan University of Technology

基　　金：湖南省自然科学基金资助项目(2023JJ50174);教育部产学合作协同育人基金资助项目(220506429021607);湖南工业大学大学生创新创业训练计划基金资助项目(2023176)。

摘　　要：采用正交试验法研究了形变量、预回复温度、预回复时间、退火温度和退火时间5个因素对2024铝合金力学性能和腐蚀性能的影响。结果表明:各因素对材料性能的影响显著,其中对力学性能影响最大的因素为退火温度,对腐蚀性能影响最大和最小的因素分别为形变量和退火时间。通过正交优化得到的最佳形变退火工艺如下:形变量为80%,且在220℃温度下预回复120 min,320℃温度下退火10 min,此工艺下获得的合金具较好综合性能,样品显微硬度、抗拉强度、屈服强度、延伸率、腐蚀深度、R_(p)和I_(corr)分别为74.49 HV、217.17 MPa、185.84 MPa、13.53%、55.4μm、3885.6Ω·cm^(-2)和9.42E-06A·cm^(-2)。A research has been conducted on the influence of five factors,namely deformation,pre-recovery temperature,pre-recovery time,annealing temperature,and annealing time,on the mechanical and corrosion properties of 2024 aluminum alloy by adopting the orthogonal experimental method.The results show that each factor has a significant impact on the material properties,with annealing temperature being the most significant factor affecting the mechanical properties,while deformation and annealing time being the most and least significant factors affecting corrosion performance,respectively.The optimal deformation annealing process obtained through orthogonal optimization is as follows:with its deformation variable being 80%,a pre-recovery of alloy for 120 minutes at 220℃ with an annealing for 10 minutes at 320℃.The alloy obtained under this process is characterized with good comprehensive properties,with the microhardness,tensile strength,yield strength,elongation,corrosion depth,R_(p) and I_(corr) of the sample being 74.49 HV,217.17 MPa,185.84 MPa,13.53%,55.4μm,3885.6Ω·cm^(-2) and 9.42E-06 A·cm^(-2),respectively.

关 键 词：2024铝合金 形变退火工艺 力学性能 腐蚀性能 

分 类 号：TG146.21[一般工业技术—材料科学与工程]