超细晶2A80变形铝合金的低温时效韧化  

Low Temperature Aging Toughening of Ultrafine Grained 2A80 Aluminum Alloy

作　　者：陈林 黄铁前 卿培林 杨途才 严伟林 CHEN Lin;HUANG Tieqian;QING Peilin;YANG Tucai;YAN Weilin(School of Materials Science and Engineering,Baise College,Baise 533000,China;College of Resources,Environment and Materials,Guangxi University,Nanning 530004,China)

机构地区：[1]百色学院材料科学与工程学院,广西百色533000 [2]广西大学资源环境与材料学院,广西南宁530004

出　　处：《热加工工艺》2020年第20期128-131,共4页Hot Working Technology

基　　金：广西高校中青年教师基础能力提升项目(KY2016LX340,2017KY0733);地方高校国家级大学生创新创业训练计划项目(201610609015,201610609021);国家自然科学基金项目(51061005);百色学院材料科学与工程一级学科建设项目(091006001)。

摘　　要：研究对象选用2A80(旧标称:LD8)T6态可热处理强化变形铝合金,合金经固溶后在常温下进行多向锻造(MF)及低温时效处理。结果表明,变形铝合金经多向锻造及时效处理后得到超细晶材料,材料的硬度和强度均显著提高,且塑性优良,抗拉强度为404.17 MPa,比T6态增加约17.54%,而伸长率为10.33%,只比T6态少约0.69%。2A80 heat-treatable aluminum alloy(old standard: LD8) was used, and multi-direction forging at normal temperature(MF) and low-temperature aging treatment were performed for the alloy after solution treatment. The results show that, the ultra fine grained aluminum alloy is obtained after multi-direction forging and aging treatment, the hardness and strength of the material are improved remarkably, and the plasticity is good. The tensile strength is 404.17 MPa, which is 17.54%higher than that of the alloy in T6 state. The elongation is 10.33%, which is only 0.69% less than that of the alloy in T6 state.

关 键 词：超细晶 多向锻造 时效处理 强韧化 

分 类 号：TG166.3[金属学及工艺—热处理] TG156.9[金属学及工艺—金属学]