Laser Peening--Strengthening Metals to Improve Fatigue Lifetime and Retard Stress-Induced Corrosion Cracking in Gears, Bolts and Cutter

Technical Report · Wed Aug 20 00:00:00 EDT 2003

DOI:https://doi.org/10.2172/15004997· OSTI ID:15004997

Hackel, L A; Chen, H-L

Laser peening is an emerging modern process that impresses a compressive stress into the surfaces of metals. Treatment can reduce the rate of fatigue cracking and stress-corrosion-cracking in metals (such as gears, bolts and cutters) needed for tunnel boring and other construction & mining applications. Laser peening could also be used to form metals or alloys into a precise shape without yielding and leaving both sulfates in a crack resistant compressive state.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: US Department of Energy (US)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 15004997
• Report Number(s): UCRL-ID-155133; TRN: US200414%%515
• Resource Relation: Other Information: PBD: 20 Aug 2003
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALLOYS
STRESS CORROSION
FASTENERS
SHOT PEENING
LASER BEAM MACHINING
FATIGUE
CRACK PROPAGATION
SERVICE LIFE
GEARS
CUTTING TOOLS
MINERAL INDUSTRY