Evaluation of HAZ liquation cracking susceptibility and HAZ softening behavior in modified 800H
- Tennessee Univ., Knoxville, TN (United States). Dept. of Materials Science and Engineering
A modified 800H alloy, developed at Oak Ridge National Laboratory (ORNL), is one of the candidate materials designed for high temperature applications. Extensive mechanical and corrosion investigations have been completed and it has been proven that modified 800 has excellent high temperature mechanical and metallurgical behavior. Weldability studies of modified 800H are being carried out at the University of Tennessee, Knoxville. A series of modified 800H alloys and two similar commercial high temperature materials (310Ta and HR3C) were used to conduct this investigation. A preliminary weldability evaluation has been accomplished and the major part of the results (HAZ liquation cracking resistance and HAZ softening behavior in modified 800H) is addressed in this report. The basic conclusion of this investigation is that modified 800H material possesses good resistance to HAZ liquation cracking especially with a grain size control (thermo-mechanical treatment). The information from this study is important to the further modification of the material in order to extend its applications.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Tennessee Univ., Knoxville, TN (United States). Dept. of Materials Science and Engineering
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 10105147
- Report Number(s):
- ORNL/SUB-88-07685/03; ON: DE93004064
- Resource Relation:
- Other Information: PBD: 20 Nov 1992
- Country of Publication:
- United States
- Language:
- English
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