Varestraint Weldability Testing of ATI 718Plus (R)-Influence of Eta Phase
Paper in proceeding, 2018
This study investigates the effect of eta phase on hot cracking susceptibility of ATI 718Plus (R). Two heat treatment conditions of 950 degrees C/1 h and 950 degrees C/15 h having different amounts of eta phase were tested by longitudinal Varestraint testing method. The heat treatment at 950 degrees C/15 h exhibited the highest amount of cracking. This was related to the higher amount of eta phase precipitation during the long dwell heat treatment which aided to extensive liquation during welding.
ATI 718plus (R)
Hot cracking
Varestraint testing
Eta phase
Author
Sukhdeep Singh
Chalmers, Industrial and Materials Science, Materials and manufacture
William Fransson
University West
Joel Andersson
University West
Anssi Brederholm
Aalto University
Hannu Hanninen
Aalto University
Minerals, Metals and Materials Series
23671181 (ISSN) 23671696 (eISSN)
929-937978-3-319-89480-5 (ISBN)
9th International Symposium on Superalloy 718 and Derivatives - Energy, Aerospace, and Industrial Applications
Champion, PA, USA,
Champion, PA, USA,
Subject Categories
Manufacturing, Surface and Joining Technology
Other Materials Engineering
Metallurgy and Metallic Materials
DOI
10.1007/978-3-319-89480-5_62