SURVEYING OF PEENING FORCE FOR COLD-WELDING METAL AND STUDYING ON THE PEENING EFFECT

Abstract

Abstract: F-t curve for peening and peening force is surveyed by strain electric methods. Post-weld peening above φp, exerted a "casting-forging" unitized working on welds, which improved the microstructure morphology, decreased the amount of micro-defects and increased dislocation density and subcrystalline boundary, then improved the toughness and strength by 30% and 15% respectively. But if the welds were peened improperly, contrary effect would be caused.

Key words: Cold-welding Peening, High hardness welds, Welding recondition, Joining, Microstructure, Nickel-based superalloys, Strength, Titanium aluminides

CLC Number:

TG456.4

Ren Dengyi;Zhang Yuanbin;Zou Zengda. SURVEYING OF PEENING FORCE FOR COLD-WELDING METAL AND STUDYING ON THE PEENING EFFECT[J]. , 1999, 35(6): 66-69.

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SURVEYING OF PEENING FORCE FOR COLD-WELDING METAL AND STUDYING ON THE PEENING EFFECT

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