Weldability of a RS-PM Al-8Fe-2Mo alloy
Creators
- 1. Concurrent Technologies Corp., Johnstown, PA (United States)
- 2. Ohio State Univ., Columbus, OH (United States)
Description
The weldability of a dispersion-strengthened Al-8Fe-2Mo (wt-%) alloy produced via rapid solidification-powder metallurgy (RS-PM) processing was investigated. Electron beam (EB) and pulsed Nd:YAG laser welding conditions were found to have a significant effect on weld solidification behavior, microstructural development and mechanical properties. Microstructural analysis revealed an influence of local thermal conditions (i.e., temperature gradient and cooling rate), macroscopic solid/liquid interface growth rate and the presence of undissolved/unmelted base metal dispersoid particles on solidification phenomena in the fusion zone. Three different types of solidification microstructures, each of which could be observed to varying degrees within a single weld fusion zone, were observed. Superior weld mechanical properties, including joint efficiencies of 100% in pulsed Nd:YAG laser welds, were achieved when high energy density welding conditions produced increasingly refined microstructures
Additional details
Publishing Information
- Journal Title
- Welding Journal (Miami)
- Journal Volume
- 72
- Journal Issue
- 8
- Journal Page Range
- p. 416s-427s.
- ISSN
- 0043-2296
- CODEN
- WEJUA3
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 25002002
- Subject category
- S36: MATERIALS SCIENCE; S36: MATERIALS SCIENCE; S36: MATERIALS SCIENCE;
- Descriptors DEI
- ALUMINIUM BASE ALLOYS; ELECTRON BEAM WELDING; IRON ALLOYS; LASER WELDING; MECHANICAL PROPERTIES; MICROSTRUCTURE; MOLYBDENUM ALLOYS; SOLIDIFICATION; WELDABILITY; WELDED JOINTS
- Descriptors DEC
- ALLOYS; ALUMINIUM ALLOYS; CRYSTAL STRUCTURE; FABRICATION; JOINING; JOINTS; WELDING