TY - JOUR
T1 - Mechanical properties and microstructures of as printed and heat treated samples of selective laser melted IN625 alloy powder
AU - Srinivasan, Raghavan
AU - Chen-Nan, Sun
AU - Baicheng, Zhang
AU - Jack, Sin Wai
AU - Pei, Wang
AU - Sharon, Nai Mui Ling
AU - Tao, Li
AU - Jun, Wei
N1 - Publisher Copyright:
© Owned by the authors, published by EDP Sciences, 2015.
PY - 2015/11/4
Y1 - 2015/11/4
N2 - The current study focusses in evaluating the mechanical properties (yield strength, ultimate tensile strength and elongation %) and microstructures of as printed and heat treated tensile samples produced by Selective Laser Melting (SLM) which is an Additive Manufacturing (AM) technique. The as printed IN625 alloy exhibited good mechanical properties as compared to cast and wrought alloy, owing to fast cooling rates that give very fine dendritic/cellular structures during the SLM process. Standard solutionizing and precipitation hardening treatment was given to the SLM as printed samples. The as printed sample's ductility increased from 30% elongation to 47% elongation with small drop in tensile strength from 878MPa to 836MPa. The increase of ductility after heat treatment was evident in the change of fracture morphology from long straight striations with dimple shape ductile like features in the as printed sample to mainly dimple shaped ductile-like fracture surface in the heat treated sample as observed in the FESEM.
AB - The current study focusses in evaluating the mechanical properties (yield strength, ultimate tensile strength and elongation %) and microstructures of as printed and heat treated tensile samples produced by Selective Laser Melting (SLM) which is an Additive Manufacturing (AM) technique. The as printed IN625 alloy exhibited good mechanical properties as compared to cast and wrought alloy, owing to fast cooling rates that give very fine dendritic/cellular structures during the SLM process. Standard solutionizing and precipitation hardening treatment was given to the SLM as printed samples. The as printed sample's ductility increased from 30% elongation to 47% elongation with small drop in tensile strength from 878MPa to 836MPa. The increase of ductility after heat treatment was evident in the change of fracture morphology from long straight striations with dimple shape ductile like features in the as printed sample to mainly dimple shaped ductile-like fracture surface in the heat treated sample as observed in the FESEM.
UR - https://www.scopus.com/pages/publications/84976474620
U2 - 10.1051/matecconf/20153002002
DO - 10.1051/matecconf/20153002002
M3 - 会议文章
AN - SCOPUS:84976474620
SN - 2261-236X
VL - 30
JO - MATEC Web of Conferences
JF - MATEC Web of Conferences
M1 - 02002
T2 - 4th International Conference on Material Science and Engineering Technology, ICMSET 2015
Y2 - 26 October 2015 through 28 October 2015
ER -