Research on Characteristic Microstructure and Properties of Fe20Ni3Mn Alloy Induced by Laser Shock Processing

Rui Fang Chen; Yin Qun Hua; Yun Xia Ye

doi:10.4028/www.scientific.net/AMR.97-101.3799

Paper Titles

Visual Computation of Thermohydrodynamic Lubrication of Dynamically Loaded Journal Bearings
p.3781

Computer-Aided Form Generation for Product Design
p.3785

Numerical Simulation of Flow Field of Metro Train Head
p.3789

Reconstruction of Human Skeleton Model Using Reverse Engineering Technology
p.3793

Research on Characteristic Microstructure and Properties of Fe20Ni3Mn Alloy Induced by Laser Shock Processing
p.3799

Formation of Periodical Sub-Micron Sized Structures on Silicon by Interfered Nanosecond Laser Pulses
p.3803

Picosecond Pulsed Laser Induced Melting of Monocrystalline Copper: A Hybrid Simulation
p.3807

Influence of Laser Parameters on Precision in Hybrid Plasma Laser Deposition Manufacturing
p.3811

Numerical Simulation on 3D Residual Stress Field of Both-Side Laser Shot Peened Specimen with Center-Hole
p.3816

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Research on Characteristic Microstructure and Properties of Fe20Ni3Mn Alloy Induced by Laser Shock Processing

Abstract:

Fe20Ni3Mn alloy is treated by LSP. The hardness, residual stress and microstructure in the strengthened zone are studied. The results show that the hardness of the strengthened surface is increased about 15% and the surface compressive residual stress is reached about -469MPa. There exist martensite transformation and dislocation within 1mm depth from the specimen surface. Some martensitic structures have obvious trend of growth in steps. Specially, the twin crystals in martersite induced by LSP have important application.