Effect of scanning speed on microstructure and properties of 30Cr3Ni2 alloy steel prepared by direct laser deposition

Xueting Chen; Suiyuan Chen; Yining Zhu; Tong Cui; Jing Liang; Changsheng Liu; Mei Wang

doi:10.1117/12.2548056

18 December 2019 Effect of scanning speed on microstructure and properties of 30Cr3Ni2 alloy steel prepared by direct laser deposition

Xueting Chen, Suiyuan Chen, Yining Zhu, Tong Cui, Jing Liang, Changsheng Liu, Mei Wang

Author Affiliations +

Proceedings Volume 11333, AOPC 2019: Advanced Laser Materials and Laser Technology; 113331F (2019) https://doi.org/10.1117/12.2548056
Event: Applied Optics and Photonics China (AOPC2019), 2019, Beijing, China

Abstract

The 30Cr3Ni2 alloy steel samples were prepared by direct laser deposition (DLD) technology with different scanning speeds. The microstructure and mechanical properties of the samples were studied by metallographic microscope, scanning electron microscopy, energy dispersive spectroscopy, microhardness tester and electronic universal material tester. The results show that when the laser power was 2500W and the scanning speed was 10mm/s, the fabricated sample mainly consisted of granular bainite(GB) with (Fe,Cr)₇C₃ carbide. The average hardness value was 341HV, the tensile strength was 875Mpa, the yield strength was 867Mpa, and the elongation was 3.9%. This study provides the basis for the further development of alloy steel produced by DLD.

Citation Download Citation

Xueting Chen, Suiyuan Chen, Yining Zhu, Tong Cui, Jing Liang, Changsheng Liu, and Mei Wang "Effect of scanning speed on microstructure and properties of 30Cr3Ni2 alloy steel prepared by direct laser deposition", Proc. SPIE 11333, AOPC 2019: Advanced Laser Materials and Laser Technology, 113331F (18 December 2019); https://doi.org/10.1117/12.2548056

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