Laser shock-induced mechanical and microstructural modification of welded maraging steel

Journal Article · Thu Mar 01 04:00:00 EST 1990 · Journal of Applied Physics; (USA)

DOI:https://doi.org/10.1063/1.345534· OSTI ID:6990007

Banas, G ^[1]; Elsayed-Ali, H E ^[2]; Lawrence, Jr, F V ^[1]; Rigsbee, J M ^[3]

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1. Department of Civil Engineering, University of Illinois, Urbana, Illinois 61801-2397 (USA)
2. Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623-1299 (USA)
3. Department of Materials Science and Engineering, University of Illinois, Urbana, Illinois 61801-2397 (USA)

The effect of laser-induced high-intensity stress waves on the hardness, fatigue resistance, and microstructure in the heat affected zone of welded 18 Ni(250) maraging steel was investigated. Laser-shock processing increased the hardness and fatigue strength of the weldments. Some melting of the surface was involved during laser-shock hardening which produced the reverted austenite phase. Microscopic analyses showed an increased dislocation density in the laser-shocked area.

• OSTI ID: 6990007
• Journal Information: Journal of Applied Physics; (USA), Journal Name: Journal of Applied Physics; (USA) Vol. 67:5; ISSN 0021-8979; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DISLOCATIONS
ELECTROMAGNETIC RADIATION
FABRICATION
HARDNESS
IRON ALLOYS
IRON BASE ALLOYS
JOINING
LASER RADIATION
LINE DEFECTS
MARAGING STEELS
MARTENSITIC STEELS
MECHANICAL PROPERTIES
MELTING
MICROSTRUCTURE
PHASE TRANSFORMATIONS
RADIATIONS
SHOCK WAVES
STEELS
SURFACES
WELDING