Preparation and printability of high performance 15Cr13MoY alloy steel powder for direct laser deposition

ABSTRACT

A novel 15Cr13MoY alloy steel powder used for direct laser deposition was produced using the vacuum induction gas atomisation (VIGA) method. The characteristics and laser printability of the 15Cr13MoY alloy steel powder were studied. The flowability of the spherical powder was 18.98 s/50 g⁻¹, and apparent density was 4.75 g cm⁻³. The fabricated 15Cr13MoY alloy steel samples composed of ferrite and bainite were prepared by DLD. The phases primarily consisted of a Fe–Cr–Mn solid solution M₇C₃, M₂₃C₆ and Y₂O₃. At the optimum laser power of 2200W, the average microhardness of 15Cr13MoY alloy steel sample was 350 HV, the tensile strength was 897 MPa, the yield strength was 704 MPa, the average elongation was 14.5%, and the product of strength and plasticity was 13.0 GPa%. The 15Cr13MoY alloy steel powder produced usingthe VIGA method had good powder characteristics and printability for fabricating the components produced by DLD.

KEYWORDS:

• Direct laser deposition
• 15Cr13MoY alloy steel powder
• VIGA method
• powder characteristics
• laser printability

Disclosure statement

No potential conflict of interest was reported by the authors.

Notes on contributors

Xueting Chen born in 1991, specializes in 3D laser printing additive manufacturing technology.

Suiyuan Chen , born in 1964, specializes in 3D laser printing additive manufacturing technology.

Jing Liang focuses on the application of laser in materials science.

Tong Cui specializes in metal materials technology.

Changsheng Liu pays attention to laser surface treatment technology of metal materials.

Wang Mei is engaged in laser manufacturing and remanufacturing.

ORCID

Xueting Chen http://orcid.org/0000-0002-5314-0221

Changsheng Liu http://orcid.org/0000-0003-3097-7608

Additional information

Funding

This work was financially supported by National Key R&D Program of China (2016YFB1100201), Green Manufacturing System Integration Project of the Industry and Information Ministry of China (2017), Research and development plan for the future emerging industries in Shenyang(18-004-2-26)