Microstructure and Properties of High-Energy Pulsed Cold-Welded Surfacing Layers on 18Cr2Ni4WA Steel

Author:

Zhang Qing1,Zhang Qing1,Shen Wei2,Tan Jun1

Affiliation:

1. Academy of Force Engineering

2. Academy of Armored Forces Engineering

Abstract

The cold-welded surfacing layers have been prepared with SKD61 welding wire by high-energy pulsed cold-welding technology on 18Cr2Ni4WA steel. The microstructure of cold-welded surfacing layers was observed by Scanning Electron Microscope(SEM)and the bonding Strength and mircohardness were tested as well. The results showed that the microstructure of cold-welded surfacing layer is mainly composed of acicular martensite ; the matrix structure of composition is granular bainite;The mean cohesive strength of cold-welded surfacing layer is 826MPa;and its mean microhardness(393.5HV)is obviously higher than that of substrate, which can increase the anti-wear property of material.

Publisher

Trans Tech Publications, Ltd.

Subject

General Engineering

Reference7 articles.

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2. Gu Xun Modern Surface Technology [J]. Summary of metal heat treatment, 1994. 4: 1-6.

3. Zhang Qing, Meng Ling–dong, Yang Jun–wei. Study on High Energy Pulse Precision cold–welding Technology for Repairing Local Surface Default of Metal Parts[J], China Surface Engineering, 2011, 24(1): 79~83.

4. Yang Junwei, Zhang Qing, Meng Ling–dong. Class high energy laser pulse cold fill technology for the repair of casting defects [J]. Casting technology, 2011, 5: 622 ~ 625.

5. Liu Haibin, Meng Jun, Bade Ma. 45CrNiMoVA steel MIG welding layer microstructure and properties [J], China Surface Engineering, 2009 (3) : 43-48.

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