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Title: Morphology of weld heat-affected zone liquation cracking in Ta-modified cast alloy 718

Abstract

The authors' discuss some problems involved in the use of alloy 718 which is a precipitation-hardenable, nickel-base superalloy developed in the early 1960s for medium temperature (540-705{sup 0}C) aerospace applications. The use of Nb as a substitute for Al and Ti leads to a susceptibility to liquation cracking in the weld heat-affected zone (HAZ). This problem is discussed in detail in the article.

Authors:
;  [1];  [2]
  1. Ohio State Univ., Columbus, OH (USA). Dept. of Welding Engineering
  2. General Electric Co., Cincinnati, OH (USA). Aircraft Engine Business Group
Publication Date:
OSTI Identifier:
7171860
Resource Type:
Journal Article
Journal Name:
Metallography (An International Journal); (USA)
Additional Journal Information:
Journal Volume: 23:3; Journal ID: ISSN 0026-0800
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; AEROSPACE INDUSTRY; MATERIALS TESTING; NICKEL BASE ALLOYS; MORPHOLOGY; ALUMINIUM; CHEMICAL COMPOSITION; CORROSION RESISTANCE; CRACKING; GRAIN BOUNDARIES; NIOBIUM; PRECIPITATION HARDENING; TANTALUM ADDITIONS; TEMPERATURE EFFECTS; TITANIUM; ALLOYS; CHEMICAL REACTIONS; CRYSTAL STRUCTURE; DECOMPOSITION; ELEMENTS; HARDENING; INDUSTRY; METALS; MICROSTRUCTURE; NICKEL ALLOYS; PYROLYSIS; TANTALUM ALLOYS; TESTING; THERMOCHEMICAL PROCESSES; TRANSITION ELEMENTS; 360102* - Metals & Alloys- Structure & Phase Studies; 360103 - Metals & Alloys- Mechanical Properties; 360105 - Metals & Alloys- Corrosion & Erosion; 360104 - Metals & Alloys- Physical Properties

Citation Formats

West, S L, Baeslack, W A, and Kelly, T J. Morphology of weld heat-affected zone liquation cracking in Ta-modified cast alloy 718. United States: N. p., 1989. Web. doi:10.1016/0026-0800(89)90033-5.
West, S L, Baeslack, W A, & Kelly, T J. Morphology of weld heat-affected zone liquation cracking in Ta-modified cast alloy 718. United States. https://doi.org/10.1016/0026-0800(89)90033-5
West, S L, Baeslack, W A, and Kelly, T J. 1989. "Morphology of weld heat-affected zone liquation cracking in Ta-modified cast alloy 718". United States. https://doi.org/10.1016/0026-0800(89)90033-5.
@article{osti_7171860,
title = {Morphology of weld heat-affected zone liquation cracking in Ta-modified cast alloy 718},
author = {West, S L and Baeslack, W A and Kelly, T J},
abstractNote = {The authors' discuss some problems involved in the use of alloy 718 which is a precipitation-hardenable, nickel-base superalloy developed in the early 1960s for medium temperature (540-705{sup 0}C) aerospace applications. The use of Nb as a substitute for Al and Ti leads to a susceptibility to liquation cracking in the weld heat-affected zone (HAZ). This problem is discussed in detail in the article.},
doi = {10.1016/0026-0800(89)90033-5},
url = {https://www.osti.gov/biblio/7171860}, journal = {Metallography (An International Journal); (USA)},
issn = {0026-0800},
number = ,
volume = 23:3,
place = {United States},
year = {Wed Nov 01 00:00:00 EST 1989},
month = {Wed Nov 01 00:00:00 EST 1989}
}