典型文献
Discovery of aluminum alloys with ultra-strength and high-toughness via a property-oriented design strategy
文献摘要：
Aluminum alloys with ultra-strength and high-toughness are fundamental structural materials applied in the aerospace industry.Due to the intrinsic restriction between strength and toughness,optimizing a de-sirable combination of these conflicting properties is always challenging in material development.In this study,171 sets of data were curated based on the characteristics of high-strength and high-toughness alu-minum alloys in the literature.Then,a machine learning design system(MLDS)with a property-oriented design strategy was established to rapidly discover novel aluminum alloys with ductility and toughness indexes(with elongation δ=8％-10％and fracture toughness KIC=33-35 MPa·m1/2)comparable to those of current state-of-the-art AA7136 aluminum alloys when the ultimate tensile strength(UTS)exceeded ap-proximately 100 MPa,with values reaching 700-750 MPa.With the MLDS for experimental verification,three typical candidate alloys show satisfactory performance with UTS of 707-736 MPa,δ of 7.8％-9.5％,and KIC of 32.2-33.9 MPa·m1/2.The high contents of Mg and Zn alloying elements in the novel alloys form abundant η'phases,which produce a significant hardening effect,while the reasonable matching of Cr,Mn,Ti and Zr dispersoids refines the grain size.The decreased Cu content compared with that in the AA7136 alloy inhibits the formation of the σ phase and S phase,so that the alloys show high toughness.
文献关键词：
中图分类号：
作者姓名：
Lei Jiang;Changsheng Wang;Huadong Fu;Jie Shen;Zhihao Zhang;Jianxin Xie
作者机构：
Beijing Advanced Innovation Center for Materials Genome Engineering,University of Science and Technology Beijing,Beijing 100083,China;Beijing Laboratory of Metallic Materials and Processing for Modern Transportation,Institute for Advanced Materials and Technology,University of Science and Technology Beijing,Beijing 100083,China;Key Laboratory for Advanced Materials Processing(MOE),University of Science and Technology Beijing,Beijing 100083,China
文献出处：
引用格式：
[1]Lei Jiang;Changsheng Wang;Huadong Fu;Jie Shen;Zhihao Zhang;Jianxin Xie-.Discovery of aluminum alloys with ultra-strength and high-toughness via a property-oriented design strategy)[J].材料科学技术（英文版）,2022(03):33-43
A类：
MLDS,AA7136,proximately,dispersoids
B类：
Discovery,aluminum,alloys,ultra,strength,high,toughness,via,property,oriented,design,strategy,Aluminum,fundamental,structural,materials,applied,aerospace,industry,Due,intrinsic,restriction,between,optimizing,sirable,combination,these,conflicting,properties,always,challenging,development,In,this,study,sets,data,were,curated,characteristics,literature,Then,machine,learning,system,was,established,rapidly,discover,novel,ductility,indexes,elongation,fracture,KIC,m1,comparable,those,current,state,art,when,ultimate,tensile,UTS,exceeded,values,reaching,With,experimental,verification,three,typical,candidate,show,satisfactory,performance,contents,Mg,alloying,elements,abundant,phases,which,produce,significant,hardening,effect,while,reasonable,matching,Mn,Ti,Zr,refines,grain,size,decreased,compared,that,inhibits,formation
AB值：
0.520632
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