High-Performance Laser Peening for Effective Mitigation of Stress Corrosion Cracking

[摘要] Stress corrosion cracking (SCC) in the Yucca Mountain waste package closure welds is believed to be the greatest threat to long-term containment. Use of stress mitigation to eliminate tensile stresses resulting from welding can prevent SCC. A laser technology with sufficient average power to achieve high throughput has been developed and commercially deployed with high peak power and sufficiently high average power to be an effective laser peening system. An appropriately applied version of this process could be applied to eliminate SCC in the waste package closure welds.

[发布日期] 2002-10-02 [发布机构] Lawrence Livermore National Laboratory

[关键词] Stresses;Welding;Yucca Mountain;Wastes;Closures