Microstructure evolution and grain growth characteristics of IN625 in laser surface melting: Effects of laser power and scanning speed

Chen, H.; Sun, L.; Li, L.; Zhu, W.; Gong, Q.; Castro, R.D.; Rushworth, A.

doi:10.1016/j.jmatprotec.2024.118525

Journal of Materials Processing Technology

2024

DOI: 10.1016/j.jmatprotec.2024.118525

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Microstructure evolution and grain growth characteristics of IN625 in laser surface melting: Effects of laser power and scanning speed

H. Chen,

L. Sun,

L. Li

et al.

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2024

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Cited by 2 publications

References 36 publications

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Optimizing laser parameters and exploring building direction dependence of corrosion behavior in NiTi alloys fabricated by laser powder bed fusion

Zhang,

Chang,

Chen

et al. 2024

Journal of Materials Research and Technology

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Optimizing laser parameters and exploring building direction dependence of corrosion behavior in NiTi alloys fabricated by laser powder bed fusion

Zhang,

Chang,

Chen

et al. 2024

Journal of Materials Research and Technology

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Effect of scanning speeds on microstructure evolution and properties of 70Cr8Ni2Y coatings by direct laser deposition

Chen,

Zhao,

Zhu

et al. 2024

Mater. Res. Express

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The 70Cr8Ni2Y coatings were prepared by direct laser deposition (DLD) with different scanning speeds. The microstructure evolution and the relationship between microstructure and properties of the coatings were studied. The results demonstrated that the microstructure of DLD 70Cr8Ni2Y coatings was martensite, and the phases were α′ (Fe-Cr) and γ-Fe (Fe-Ni). With the increased of scanning speed, the martensite size decreased from 5.42 ± 0.04 μm to 4.42 ± 0.01 μm and 3.20 ± 0.02 μm. When the scanning speed was 20 mm s−1, the fabricated coating displayed the highest average microhardness (883 ± 37 HV) and the lowest mass wear rate (0.061 mg mm−1) without pores. The combined strengthening effect of fine grain strengthening and solid solution strengthening, as well as good formability, were the fundamental reasons for the high hardness and wear resistance of the coating. The results of this study can provide an experimental basis for the DLD alloy coatings with high hardness and wear resistance.

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Microstructure evolution and grain growth characteristics of IN625 in laser surface melting: Effects of laser power and scanning speed

Cited by 2 publications

References 36 publications

Optimizing laser parameters and exploring building direction dependence of corrosion behavior in NiTi alloys fabricated by laser powder bed fusion

Optimizing laser parameters and exploring building direction dependence of corrosion behavior in NiTi alloys fabricated by laser powder bed fusion

Effect of scanning speeds on microstructure evolution and properties of 70Cr8Ni2Y coatings by direct laser deposition

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