典型文献
Addressing the strength-ductility trade-off in a cast Al-Li-Cu alloy-Synergistic effect of Sc-alloying and optimized artificial ageing scheme
文献摘要：
A dramatic improvement of strength and ductility of cast Al-2.SLi-1.5Cu-1Zn-0.5Mg-0.15 Zr alloy was obtained by the collaboration of Sc-alloying and optimized ageing scheme.Joint and independent influ-ence of Sc-alloying and different ageing temperatures were investigated.The results revealed that a substantial increase was realized in the hardness of Sc-containing alloy,and the ageing response time was only influenced by ageing temperature.Coarse and heterogeneous δ'(Al3Li),wide δ'-precipitation free zones (δ'-PFZs),and a large amount of T1 (Al2CuLi) precipitates were observed in Sc-containing alloy aged at 175 ℃,which resulted in superior yield strength and poor elongation.The Sc-containing alloy obtained an excellent combination of ductility (elongation =8.2 ％) and tensile strength (ultimate strength=565 MPa) suffered to 150 ℃ ageing for 64 h.The increase in the elongation was mainly due to the com-bined effect of grain refining,much finer δ',and extremely narrow δ'-PFZs (＜10 nim),while the higher strength was mainly attributed to the formation of Al3(Sc,Zr,Li) composite particles and a large amount of S'(Al2CuMg) phase.However,the enhancement of the different ageing temperature (150 ℃ and 175℃) on the mechanical properties of the alloys without Sc addition was not obvious.
文献关键词：
中图分类号：
作者姓名：
Jinshuo Zhang;Guohua Wu;Liang Zhang;Xiaolong Zhang;Chunchang Shi;Xin Tong
作者机构：
National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composites,School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai,200240,China;Shanghai Innovation Institute for Materials,Shanghai,200444,China
文献出处：
引用格式：
[1]Jinshuo Zhang;Guohua Wu;Liang Zhang;Xiaolong Zhang;Chunchang Shi;Xin Tong-.Addressing the strength-ductility trade-off in a cast Al-Li-Cu alloy-Synergistic effect of Sc-alloying and optimized artificial ageing scheme)[J].材料科学技术（英文版）,2022(01):212-225
A类：
SLi,nim
B类：
Addressing,strength,ductility,trade,off,cast,Synergistic,effect,Sc,alloying,optimized,artificial,ageing,scheme,dramatic,improvement,5Cu,1Zn,5Mg,Zr,was,obtained,by,collaboration,Joint,independent,different,temperatures,were,investigated,results,revealed,that,substantial,increase,realized,hardness,containing,response,only,influenced,Coarse,heterogeneous,Al3Li,wide,precipitation,free,zones,PFZs,large,amount,Al2CuLi,precipitates,observed,aged,which,resulted,superior,yield,poor,elongation,excellent,combination,tensile,ultimate,suffered,mainly,due,bined,grain,refining,much,finer,extremely,narrow,while,higher,attributed,formation,composite,particles,Al2CuMg,phase,However,enhancement,mechanical,properties,alloys,without,addition,not,obvious
AB值：
0.515
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