Process Optimization and Tailored Mechanical Properties of a Nuclear Zr-4 Alloy Fabricated via Laser Powder Bed Fusion

Song, Changhui1; Zou, Zhuang1; Yan, Zhongwei1; Liu, Feng2; Yang, Yongqiang1; Yan, Ming3; Han, Changjun1

2023-03-01

10.3390/mi14030556

MICROMACHINES   Impact Factor & Quartile

2072-666X

A nuclear Zr-4 alloy with a near full density was fabricated via laser powder bed fusion (LPBF). The influences of process parameters on the printability, surface roughness, and mechanical properties of the LPBF-printed Zr-4 alloy were investigated. The results showed that the relative density of the Zr-4 alloy samples was greater than 99.3% with the laser power range of 120-160 W and the scanning speed range of 600-1000 mm/s. Under a moderate laser power in the range of 120-140 W, the printed Zr-4 alloy possessed excellent surface molding quality with a surface roughness less than 10 mu m. The microstructure of the printed Zr-4 alloy was an acicular alpha phase with an average grain size of about 1 mu m. The Zr-4 alloy printed with a laser power of 130 W and a scanning speed of 400 mm/s exhibited the highest compression strength of 1980 MPa and the highest compression strain of 28%. The findings demonstrate the potential in the fabrication of complex Zr-4 alloy parts by LPBF for industrial applications.

additive manufacturing laser powder bed fusion zirconium alloys Zr-4 process optimization

SCI

English

Others

Guangdong Basic and Applied Basic Research Foundation[2020B1515120013] ; Guangdong Province Science and Technology Project[2020B090924002] ; National Natural Science Foundation of China[U2001218] ; Special Support Foundation of Guangdong Province[2019TQ05Z110] ; Capital Health Development Scientific Research Project[A5210020] ; Shenzhen Science and Technology Plan Project[JSGG20210802153809029]

Chemistry ; Science & Technology - Other Topics ; Instruments & Instrumentation ; Physics

Chemistry, Analytical ; Nanoscience & Nanotechnology ; Instruments & Instrumentation ; Physics, Applied

WOS:000958450200001

MDPI

Web of Science

1.South China Univ Technol, Sch Mech & Automot Engn, Guangzhou 510641, Peoples R China
2.China Nucl Power Technol Res Inst Co Ltd, Inst Reactor Waste & Radiochem Res, Shenzhen 518028, Peoples R China
3.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China

Song, Changhui,Zou, Zhuang,Yan, Zhongwei,et al. Process Optimization and Tailored Mechanical Properties of a Nuclear Zr-4 Alloy Fabricated via Laser Powder Bed Fusion[J]. MICROMACHINES,2023,14(3).

Song, Changhui.,Zou, Zhuang.,Yan, Zhongwei.,Liu, Feng.,Yang, Yongqiang.,...&Han, Changjun.(2023).Process Optimization and Tailored Mechanical Properties of a Nuclear Zr-4 Alloy Fabricated via Laser Powder Bed Fusion.MICROMACHINES,14(3).

Song, Changhui,et al."Process Optimization and Tailored Mechanical Properties of a Nuclear Zr-4 Alloy Fabricated via Laser Powder Bed Fusion".MICROMACHINES 14.3(2023).