Weldability of alloys with directionally-solidified grain structure
US8220697B2 · kind B2 · utility
5Cited by
26References
18Claims
0Family size
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Key dates
| Filing date | Jan 18, 2005 |
| Grant date | Jul 17, 2012 |
| Priority date | — |
| Expiry date | Jun 17, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K26/356
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of welding alloys having directionally-solidified grain structure. The methods improve the weldability of these alloys by creating a localized region of fine grain structure, wherein the welding occurs in these localized regions. The localized regions are formed by applying strain energy using a variety of different methods, such as by hammer peening, laser peening or sand blasting. Then, a heat treatment step may be used to create recrystallized grains having the fine grain structure. The region of fine grain structure provides better weldability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.