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Morphology-Dependent Hardness of Cr7C3-Ni-Rich Alloy Composite vs Orientation Independent Hardness of Cr7C3 Primary Phase in a Laser Clad Microstructure
Int Adv Res Ctr Powder Met & New Mat ARCI, Hyderabad 500005, Andhra Pradesh, India.
Int Adv Res Ctr Powder Met & New Mat ARCI, Hyderabad 500005, Andhra Pradesh, India.
Int Adv Res Ctr Powder Met & New Mat ARCI, Hyderabad 500005, Andhra Pradesh, India.
Drexel Univ, Dept Mat Engn, Philadelphia, PA 19104 USA.
Vise andre og tillknytning
2017 (engelsk)Inngår i: Metallurgical and Materials Transactions. A, ISSN 1073-5623, E-ISSN 1543-1940, Vol. 48A, nr 4, s. 1534-1539Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Microstructural evolution with superheating was studied in chromium carbide-nickel coatings deposited by laser cladding. At lower superheating, selective growth of aOE (c) 0001 > direction from the high density of Cr7C3 grains nucleated resulted in a columnar structure with (0001) texture. Increased superheating lead to the loss of columnar structure as well as the (0001) texture. The hexagonal Cr7C3 showed an unusual isotropic nanoindentation hardness evidently correlated with its low c/a ratio. However, the rod-like morphology of the carbide dendrites resulted in significant anisotropy in the hardness of the composite.

sted, utgiver, år, opplag, sider
2017. Vol. 48A, nr 4, s. 1534-1539
Emneord [en]
SINGLE-CRYSTALS; EQUIAXED TRANSITION; STAINLESS-STEEL; TI-ALLOY; ANISOTROPY; NANOINDENTATION; GROWTH; ALPHA-SI3N4; MICROSCOPY; COATINGS
HSV kategori
Forskningsprogram
TEKNIK, Produktions- och materialteknik
Identifikatorer
URN: urn:nbn:se:hv:diva-10928DOI: 10.1007/s11661-017-3984-2ISI: 000396057300004Scopus ID: 2-s2.0-85012115668OAI: oai:DiVA.org:hv-10928DiVA, id: diva2:1136153
Tilgjengelig fra: 2017-08-25 Laget: 2017-08-25 Sist oppdatert: 2019-05-23bibliografisk kontrollert

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Joshi, Shrikant V.

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