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Title: Microstructural characterization of Al-rich Ni-Cr-Al cast alloys

Abstract

Several Ni-Cr-Al alloys, with up to 30 at.% Al, were prepared in an induction furnace and cast under inert atmosphere. All alloys were homogenized for 8 h at 1,473 K under an argon atmosphere, followed by treatments at temperatures between 1,023 and 1,273 K for times up to 180 h. These alloys contain phases that are to a great extent, structurally similar. This is frequently complicated further by their particle size and their degree of order. Their characterization is not always simple and usually must be based on more than one technique. In this work the microstructural evolution was studied by means of light microscopy, scanning electron microscopy and microanalysis, and X-ray diffraction techniques. For completeness, hardness and microhardness tests were performed to evaluate the precipitation phenomenon.

Authors:
; ; ;  [1]
  1. Centro Nacional de Investigaciones Metalurgicas, Madrid (Spain)
Publication Date:
OSTI Identifier:
6989622
Resource Type:
Journal Article
Journal Name:
Materials Characterization; (United States)
Additional Journal Information:
Journal Volume: 33:2; Journal ID: ISSN 1044-5803
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALUMINIUM ALLOYS; MICROSTRUCTURE; PRECIPITATION HARDENING; CHROMIUM ALLOYS; NICKEL BASE ALLOYS; HEAT RESISTING ALLOYS; HEAT TREATMENTS; ALLOYS; HARDENING; HEAT RESISTANT MATERIALS; MATERIALS; NICKEL ALLOYS; 360102* - Metals & Alloys- Structure & Phase Studies; 360103 - Metals & Alloys- Mechanical Properties

Citation Formats

Gonzalez-Carrasco, J L, Adeva, P, Cristina, M C, and Aballe, M. Microstructural characterization of Al-rich Ni-Cr-Al cast alloys. United States: N. p., 1994. Web. doi:10.1016/1044-5803(94)90076-0.
Gonzalez-Carrasco, J L, Adeva, P, Cristina, M C, & Aballe, M. Microstructural characterization of Al-rich Ni-Cr-Al cast alloys. United States. https://doi.org/10.1016/1044-5803(94)90076-0
Gonzalez-Carrasco, J L, Adeva, P, Cristina, M C, and Aballe, M. 1994. "Microstructural characterization of Al-rich Ni-Cr-Al cast alloys". United States. https://doi.org/10.1016/1044-5803(94)90076-0.
@article{osti_6989622,
title = {Microstructural characterization of Al-rich Ni-Cr-Al cast alloys},
author = {Gonzalez-Carrasco, J L and Adeva, P and Cristina, M C and Aballe, M},
abstractNote = {Several Ni-Cr-Al alloys, with up to 30 at.% Al, were prepared in an induction furnace and cast under inert atmosphere. All alloys were homogenized for 8 h at 1,473 K under an argon atmosphere, followed by treatments at temperatures between 1,023 and 1,273 K for times up to 180 h. These alloys contain phases that are to a great extent, structurally similar. This is frequently complicated further by their particle size and their degree of order. Their characterization is not always simple and usually must be based on more than one technique. In this work the microstructural evolution was studied by means of light microscopy, scanning electron microscopy and microanalysis, and X-ray diffraction techniques. For completeness, hardness and microhardness tests were performed to evaluate the precipitation phenomenon.},
doi = {10.1016/1044-5803(94)90076-0},
url = {https://www.osti.gov/biblio/6989622}, journal = {Materials Characterization; (United States)},
issn = {1044-5803},
number = ,
volume = 33:2,
place = {United States},
year = {Thu Sep 01 00:00:00 EDT 1994},
month = {Thu Sep 01 00:00:00 EDT 1994}
}