Rights statement: This is the author’s version of a work that was accepted for publication in Materials Science and Engineering: A. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Materials Science and Engineering: A, 814, 2021 DOI: 10.1016/j.msea.2021.141238
Accepted author manuscript, 2.66 MB, PDF document
Available under license: CC BY-NC-ND
Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Microstructures and mechanical properties of Nb nanoparticles modified Ni60 hard-facing alloy fabricated by laser metal deposition
AU - Liu, L.
AU - Wang, W.
AU - Zhang, X.
AU - Li, X.
AU - Tian, Y.
AU - Zhao, X.
N1 - This is the author’s version of a work that was accepted for publication in Materials Science and Engineering: A. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Materials Science and Engineering: A, 814, 2021 DOI: 10.1016/j.msea.2021.141238
PY - 2021/5/13
Y1 - 2021/5/13
N2 - Crack-free samples were made from Nb nanoparticles modified Ni60 hard-facing alloy using laser metal deposition. Addition of Nb nanoparticles was carried out to modify the columnar dendrites and eutectic microstructures by providing large number of nucleation sites. The purpose of this study was to evaluate the effect of nanoparticles addition on cracking susceptibility of Ni–Cr–B–Si alloy. The results show that with addition of Nb nanoparticles, the cracking susceptibility reduced significantly with acceptable hardness loss. Large hard phases were refined and the columnar dendrites were converted to equiaxed grains, leading to a separated eutectic microstructure which restrain the initiation and growth of cracks. The study demonstrated a new method to tackle the cracking problem of laser manufactured Ni–Cr–B–Si alloys, accelerating the adoption of Ni–Cr–B–Si alloys on additive manufacturing applications.
AB - Crack-free samples were made from Nb nanoparticles modified Ni60 hard-facing alloy using laser metal deposition. Addition of Nb nanoparticles was carried out to modify the columnar dendrites and eutectic microstructures by providing large number of nucleation sites. The purpose of this study was to evaluate the effect of nanoparticles addition on cracking susceptibility of Ni–Cr–B–Si alloy. The results show that with addition of Nb nanoparticles, the cracking susceptibility reduced significantly with acceptable hardness loss. Large hard phases were refined and the columnar dendrites were converted to equiaxed grains, leading to a separated eutectic microstructure which restrain the initiation and growth of cracks. The study demonstrated a new method to tackle the cracking problem of laser manufactured Ni–Cr–B–Si alloys, accelerating the adoption of Ni–Cr–B–Si alloys on additive manufacturing applications.
KW - Cracking problem
KW - Laser metal deposition
KW - Nanoparticle
KW - Ni60
KW - Ni–Cr–B–Si alloy
KW - Alloys
KW - Cracks
KW - Dendrites (metallography)
KW - Eutectics
KW - Facings
KW - Metal nanoparticles
KW - Textures
KW - Columnar dendrites
KW - Crack free
KW - Cracking susceptibility
KW - Eutectic microstructure
KW - Facing alloys
KW - Microstructures and mechanical properties
KW - Ni–cr–B–si alloy
KW - Si alloys
KW - Deposition
U2 - 10.1016/j.msea.2021.141238
DO - 10.1016/j.msea.2021.141238
M3 - Journal article
VL - 814
JO - Materials Science and Engineering: A
JF - Materials Science and Engineering: A
SN - 0921-5093
M1 - 141238
ER -