A356铝合金水射流快速成型技术研究  

A study on water jet rapid prototyping technology of A356 aluminum alloy

作　　者：修大鹏 陈永峰 李鹏 钱启伟 赵晓宇 XIU Dapeng;CHEN Yongfeng;LI Peng;QIAN Qiwei;ZHAO Xiaoyu(Advanced Materials Institute,Qilu University of Technology(Shandong Academy of Sciences),Jinan 250014,China;Shandong Tongyang New Energy Technology Co.,Ltd.,Heze 274000,China;Shandong Longpu Solar Energy Co.,Ltd.,Liaocheng 252000,China;Shandong Longguang Tianxu Solar Energy Co.,Ltd.,Weifang 261000,China;Shandong Muyang New Energy Co.,Ltd.,Rizhao 276800,China)

机构地区：[1]齐鲁工业大学(山东省科学院)新材料研究所,山东济南250014 [2]山东同阳新能源科技股份有限公司,山东菏泽274000 [3]山东龙普太阳能股份有限公司,山东聊城252000 [4]山东龙光天旭太阳能有限公司,山东潍坊261000 [5]山东沐阳新能源有限公司,山东日照276800

出　　处：《齐鲁工业大学学报》2024年第4期36-41,共6页Journal of Qilu University of Technology

基　　金：山东省中小企业创新能力提升工程项目(2023TSGC0068);潍坊市科技发展计划项目(2023ZJ1159)。

摘　　要：介绍了一种金属合金快速成型技术。该技术基于动态定向凝固原理,在不添加精炼剂、变质剂和脱气剂条件下,通过高压水射流动态快速冷却,实现合金组织的晶粒细化和气孔减排,改善合金力学性能。采用该技术制备的A356铝合金冷凝时间可缩短至15 s,金相显微组织均匀,α-Al和共晶Si相明显细化,二次枝晶臂间距明显减小,气孔缺陷有效改善,孔隙率可降至1.1%,合金抗拉强度高达285 MPa。A rapid prototyping technology for metal alloys is introduced.The technology is based on the principle of dynamic directional solidification.The grain refinement and porosity reduction of the alloy microstructure can be achieved by high pressure water jet dynamic and rapid cooling without adding refining agent,metamorphic agent and degassing agent,and the mechanical properties of the alloy can be improved.The condensation time of A356 aluminum alloy prepared by this technology can be shortened to 15 s.The microstructure is uniform,the primary phase(α-Al)and eutectic Si phases are obviously refined,the secondary dendrite arm spacing is significantly reduced.The porosity defects are effectively improved,the porosity can be reduced to 1.1%.The tensile strength of alloy is as high as 285 MPa.

关 键 词：晶粒细化 水射流快速成型 冷却速率 定向排气 

分 类 号：TG221[金属学及工艺—铸造]