Microstructure and mechanical properties of Al-12Si produced by selective laser melting: Effect of heat treatment

被引：615
|
作者：
Prashanth, K. G. [1 ]
Scudino, S. [1 ]
Klauss, H. J. [2 ]
Surreddi, K. B. [3 ]
Loeber, L. [1 ]
Wang, Z. [1 ]
Chaubey, A. K. [1 ,4 ]
Kuehn, U. [1 ]
Eckert, J. [1 ,5 ]
机构：
[1] IFW Dresden, Inst Komplexe Mat, D-01171 Dresden, Germany
[2] IFW Dresden, Inst Metall Werkstoffe, D-01171 Dresden, Germany
[3] Chalmers, Dept Mat & Mfg Technol, S-41296 Gothenburg, Sweden
[4] IMMT, Bhubaneswar 751013, Orissa, India
[5] Tech Univ Dresden, Inst Werkstoffwissensch, D-01062 Dresden, Germany
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2014年 / 590卷
关键词：
Selective laser melting; Aluminum alloys; Microstructure; Tensile behavior; METAL POWDERS; RAPID SOLIDIFICATION; SURFACE-MORPHOLOGY; BEHAVIOR; STEEL; ALLOY; TI6AL4V;
D O I：
10.1016/j.msea.2013.10.023
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Al-12Si specimens are produced by selective laser melting (SLM) from gas atomized powders. An extremely fine cellular structure is observed with residual free Si along the cellular boundaries. Room temperature tensile tests reveal a remarkable mechanical behavior: the samples show yield and tensile strengths of about 260 MPa and 380 MPa, respectively, along with fracture strain of similar to 3%. The effect of annealing on microstructure and related tensile properties is examined and the results demonstrate that the mechanical behavior of the Al-12Si SLM samples can be tuned within a wide range of strength and ductility through proper annealing treatment. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：153 / 160
页数：8
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