The welding metallurgy of Custom Age 625 PLUS alloy
- Sandia National Labs., Alburquerque, NM (US)
- Carpenter Technology Corp., Reading, PA (US)
The authors discuss the welding metallurgy (solidification behavior, mechanical properties of weld metal, and susceptibility to fusion zone hot cracking) of Carpenter Custom Age 625 PLUS alloy. This alloy solidifies to a nickel austenitic matrix with the formation of a Nb-rich {gamma}/Laves terminal solidification constituent. The low Si and C concentrations in combination with a lower Nb content (3.4wt-%) in this alloy result in a relatively small volume fraction of eutectic constituent relative to that previously observed in Alloy 718. Because of the low volume fraction of eutectic constituent, this alloy has better weldability than Alloy 718. In addition to Laves phase, {gamma} was observed adjacent to Laves phase {gamma} was observed adjacent to Laves in the fusion zone microstructure of the new alloy. Weld metal strengths approximately equal to aged wrought product can be achieved by direct aging of welds.
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6955967
- Journal Information:
- Welding Journal (Miami); (USA), Journal Name: Welding Journal (Miami); (USA) Vol. 68:12; ISSN 0043-2296; ISSN WEJUA
- Country of Publication:
- United States
- Language:
- English
Similar Records
The solidification behavior of an Alloy 625/718 variant
The solidification metallurgy of Alloy 718 and other Nb-containing superalloys
Related Subjects
360101* -- Metals & Alloys-- Preparation & Fabrication
360102 -- Metals & Alloys-- Structure & Phase Studies
360103 -- Metals & Alloys-- Mechanical Properties
ALLOYS
AUSTENITIC STEELS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CRACKING
CRYSTAL STRUCTURE
DECOMPOSITION
IRON ALLOYS
IRON BASE ALLOYS
JOINTS
MICROSTRUCTURE
NICKEL ALLOYS
NICKEL BASE ALLOYS
PHASE TRANSFORMATIONS
PYROLYSIS
SOLIDIFICATION
STEELS
THERMOCHEMICAL PROCESSES
WELDABILITY
WELDED JOINTS