钪在轻合金中的强化机制与应用现状  

Strengthening Mechanism and Application Status of Scandium in Light Alloys

作　　者：陈巧旺[1] 林翰 姜中涛[1] 姜山[1] 邓莹[1] 敬小龙 程军[3] 苏华 CHEN Qiaowang;LIN Han;JIANG Zhongtao;JIANG Shan;DENG Ying;JING Xiaolong;CHENG Jun;SU Hua(College of Materials Science and Engineering,Chongqing University of Arts and Sciences,Yongchuan 402160,China;Guizhou Aerospace Fenghua Precision Equipment Co.,Ltd.,Guiyang 550009,China;Shaanxi Key Laboratory of Biomedical Metal Materials,Northwest Institute for Non-ferrous Metal Research,Xi’an 710016,China;MCC Ramu New Energy Technology Co.,Ltd.,Tangshan 063200,China)

机构地区：[1]重庆文理学院材料科学与工程学院,重庆永川402160 [2]贵州航天风华精密设备有限公司,贵州贵阳550009 [3]西北有色金属研究院陕西省医用金属材料重点实验室,陕西西安710016 [4]中冶瑞木新能源科技有限公司,河北唐山063200

出　　处：《材料科学与工程学报》2022年第4期717-724,共8页Journal of Materials Science and Engineering

基　　金：国家自然科学基金资助项目(51901193);重庆市教委科学技术研究资助项目(KJQN201801312,KJQN201801306,KJQN201801314);陕西省重点研发计划资助项目(2019GY-151);重庆文理学院人才引进资助项目(2017RXC24,2017YXC50)。

摘　　要：本文对钪元素在铝、镁和钛3种轻合金中的强化机制和应用现状进行了分析和对比。钪在铝合金中产生共晶反应,通过形成与基体共格的Al_(3)Sc相对合金的微观组织和力学性能产生影响。钪在镁合金中产生包晶反应,可通过αMg/βSc固态相变和中间相γMgSc来调控合金微观组织和力学性能。钪和钛之间不形成中间相,βSc和βTi之间可形成连续固溶体,αSc和αTi只能有限互溶。含钪铝合金已获得实际应用,含钪镁合金和含钪钛合金仍未见实际应用的公开报道。3种轻合金的最新国家标准中,均未推出含钪的合金牌号。The application status of scandium in aluminum alloys,magnesium alloys,and titanium alloys was analyzed and compared.In aluminum alloys,scandium reacted with aluminum to form Al_(3)Sc through a eutectic reaction.The Al_(3)Sc can maintain a coherent relationship with matrix and improve its microstructure and mechanical properties.In magnesium alloys,there is a peritectic reaction between scandium and magnesium.Phase transformation ofαMg/βSc and formation ofγMgSc were used to tailor microstructure and improve mechanical properties of magnesium-scandium alloys.No intermetallic phase was formed in titanium-scandium binary phase diagram.A continuous solid solution can be formed betweenβTi andβSc.But,there is a limited solid solubility betweenαTi andαSc.Aluminum alloys containing scandium have been applied to practical,but it is not the situation in magnesium alloys and titanium alloys.In the latest national standards about aluminum alloys,magnesium alloys,and titanium alloys,no alloy designation containing scandium was developed.

关 键 词：钪 轻合金 相图 固溶度 

分 类 号：TG146.2[一般工业技术—材料科学与工程] TG146.4[金属学及工艺—金属材料]