Author:
Zhang Haoyue,Chang Luqi,Zhang Hongwei,Li Junyan,Yang Zijiang,Qiao Bingxuan,Zhao Zhenjiang,Dong Chaofang,Zhang Kai
Abstract
Purpose
The purpose of this paper is to study the mechanical and corrosion behaviors of selective laser melting (SLM) 30CrMnSiA steel.
Design/methodology/approach
The microstructure, mechanical behavior and corrosion resistance of SLM 30CrMnSiA steel were studied by electrochemical test and immersion experiment.
Findings
The results showed that the microstructure of SLM 30CrMnSiA steel contained equiaxed fine (25.0 µm) ferrite and lamellar pearlite. The tensile strength of SLM 30CrMnSiA steel under the process parameters is 1,447 MPa and the elongation is 7.5%. As the immersion/salt spray test time increased to 15 days/48 h, corrosion mainly occurred in the local position of the sample and corrosion resistance decreased. When the immersion/salt spray test time increased to 30 days/168 h, the corrosion production covered the surface of the samples and the corrosion resistance increased.
Originality/value
The paper can guide the application and in situ repair for low-alloy steel by additive manufacturing.
Subject
General Materials Science,General Chemical Engineering
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