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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
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- Venkatesh, Lakshmi Narayanan (author)
- Int Adv Res Ctr Powder Met & New Mat ARCI, Hyderabad 500005, Andhra Pradesh, India
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- Babu, Pitchuka Suresh (author)
- Int Adv Res Ctr Powder Met & New Mat ARCI, Hyderabad 500005, Andhra Pradesh, India
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- Gundakaram, Ravi Chandra (author)
- Int Adv Res Ctr Powder Met & New Mat ARCI, Hyderabad 500005, Andhra Pradesh, India
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- (creator_code:org_t)
- 2017-02-10
- 2017
- English.
- In: Metallurgical and Materials Transactions. A. - : Springer Science and Business Media LLC. - 1073-5623 .- 1543-1940. ; 48A:4, s. 1534-1539
- Journal article (peer-reviewed)
Abstract
Subject headings
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- 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.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Bearbetnings-, yt- och fogningsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Manufacturing, Surface and Joining Technology (hsv//eng)
Keyword
- SINGLE-CRYSTALS; EQUIAXED TRANSITION; STAINLESS-STEEL; TI-ALLOY; ANISOTROPY; NANOINDENTATION; GROWTH; ALPHA-SI3N4; MICROSCOPY; COATINGS
- Manufacturing and materials engineering
- Produktions- och materialteknik
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- ref (subject category)
- art (subject category)
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