Solidification and microstructural aspects of laser deposited Ni-Mo-Cr-Si alloy on stainless steel

Awasthi, Reena ; Kumar, Santosh ; Srivastava, D. ; Dey, G. K. (2010) Solidification and microstructural aspects of laser deposited Ni-Mo-Cr-Si alloy on stainless steel Pramana - Journal of Physics, 75 (6). pp. 1259-1266. ISSN 0304-4289

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Official URL: http://www.ias.ac.in/pramana/v75/p1259/fulltext.pd...

Related URL: http://dx.doi.org/10.1007/s12043-010-0215-4

Abstract

Laser cladding of stainless steel substrate was carried out using Ni-32Mo-15Cr-3Si (wt%) alloy powder. Laser cladding parameters were optimized to obtain defectfree and metallurgically bonded clad. Variation in solidification rate, cooling rate and compositional variation resulted in heterogeneous microstructure. Microstructure was found to be distinctly different in regions of clad cross-section. Majority of the region was found to consist of eutectic of Mo-rich hcp intermetallic Laves phase and NiFe fcc gamma solid solution phases. Extensive microstructural examinations of different clad regions have been carried out using microscopy and microanalysis techniques.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:Laser Cladding; Microstructure; Ni-Mo-Cr-Si Alloy
ID Code:82266
Deposited On:10 Feb 2012 04:55
Last Modified:18 May 2016 23:32

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