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Home  >  Journal list  >  MATERIALS TRANSACTIONS  >  Vol.44  No.4 (2003)  >  pp.759-765

MATERIALS TRANSACTIONS
<<Previous article Vol.44  No.4 (2003)   pp.759 - 765 Next article>>

The Characterization of HIP and RHIP Consolidated NiAl Intermetallic compounds Containing Chromium Particles

Shintaro Ishiyama1), Hans Peter Buchkremer2) and Dovert Stöver2)
1) Japan Atomic Research Institute
2) Institute of Energy Materials 2(IWE2), Research Center Jülich


NiAl intermetallics with dispersive Cr particles consolidated by the Hot Isostaic Press (HIP) and Reactive HIP (RHIP) techniques, has been investigated. Mechanical properties of HIPed and RHIPed materials with various Cr concentrations ranging form 0 to 30 mass%Cr, were examined at various temperatures. The consolidation temperature of RHIP materials decreases with Cr addition; when RHIPing NiAl+xCr compounds with 25 mass% has attained remarkable high ductility over 17% elongation and over 400 MPa tensile strength at 873 K. A very high tensile strength of HIPed NiAl+20 mass%Cr over 600 MPa with 10% elongation at 873 K can be achieved at 873 K.


Keyword:
NiAl Intermetallic compound, chromium, hot isostatic press, reactive hot isostatic press, tensile strength, ductility, ductile brittle transition temperature

Received: October 07, 2002
Accepted: February 21, 2003 , Published online: September 06, 2005
Copyright (c) 2005 The Japan Institute of Metals

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