Microstructure and mechanical properties of Al-12Si produced by selective laser melting: Effect of heat treatment
Microstructure and mechanical properties of Al-12Si produced by selective laser melting: Effect of heat treatment
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DOI：
10.1016/j.msea.2013.10.023
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发表时间：
2014-01-10
期刊：
影响因子：
6.4
通讯作者：
Eckert, J.
中科院分区：
文献类型：
--
作者：
Prashanth, K. G.;Scudino, S.;Eckert, J.
采用气体雾化粉末选择性激光熔化（SLM）技术制备了Al-12 Si试样。观察到极细的胞状结构，沿胞状边界沿着有残留的游离Si。室温拉伸试验显示出显著的力学性能：样品显示出分别约260 MPa和380 MPa的屈服强度和拉伸强度，沿着具有类似于3%的断裂应变。研究了退火对Al-12 Si SLM试样显微组织和拉伸性能的影响，结果表明，通过适当的退火处理，Al-12 Si SLM试样的力学性能可以在较宽的强度和塑性范围内得到调节。(C)2013爱思唯尔有限公司版权所有。
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.