Fabricating characteristics of an ultrahigh-strength steel
- Carpenter Technology Corp., Reading, PA (United States). Tool and Alloy R and D
- Carpenter Technology, El Cajon, CA (United States). Special Products Division
- Sandia National Labs., Albuquerque, NM (United States). Physical and Joining Metallurgy Dept.
AerMet[reg sign] 100 alloy is an ultra-high-strength steel initially developed to meet the demanding specifications for landing gear of US Navy carrier-based jet aircraft. Welding is an important process in the fabrication of parts and components made from AerMet 100 alloy which, because of its unusual combination of ultrahigh strength and fracture toughness, is finding widespread commercial application. It already has been designated by the National Association for Science, Technology and Society as the most significant new steel developed in the last decade. Experience shows that when this new steel is welded properly, and can be fully heat treated, the metallurgical properties of the weld metal are similar to those of the base metal. The alloy can be welded successfully in the overage annealed (as-shipped) condition. It also can be welded in the fully heat treated pulse aged condition without cracking, but there is a sacrifice in yield strength and ductility if not re-heat treated. Some strength and ductility can be restored with a stress relief or an aging heat treatment. Finally, although AerMet 100 alloy and AISI 4130 appear to be similar alloys, greater skill is required to weld the thinner wall AerMet 100 alloy, different equipment settings are necessary and some new welding techniques are needed for best results.
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 6875595
- Journal Information:
- Welding Journal (Miami); (United States), Journal Name: Welding Journal (Miami); (United States) Vol. 74:2; ISSN 0043-2296; ISSN WEJUA3
- Country of Publication:
- United States
- Language:
- English
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