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ZHANG Guo-xiang, YAO Dong-wei. Effect of laser-quenching substrate on interfacial shear strength of chromium plated coatings[J]. LASER TECHNOLOGY, 2012, 36(4): 527-531. DOI: 10.3969/j.issn.1001-806.2012.04.023
Citation: ZHANG Guo-xiang, YAO Dong-wei. Effect of laser-quenching substrate on interfacial shear strength of chromium plated coatings[J]. LASER TECHNOLOGY, 2012, 36(4): 527-531. DOI: 10.3969/j.issn.1001-806.2012.04.023
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Effect of laser-quenching substrate on interfacial shear strength of chromium plated coatings

  • Department of Mechanical & Electrical Engineering, Jianghai Polytechanic College, Yangzhou 225101, China

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  • Received Date: November 03, 2011
  • Revised Date: December 14, 2011
  • Published Date: July 24, 2012
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    • Abstract
  • Based on the real condition that laser quenching steel substrate could improve the service life of chromium-plated gun bore,the interfacial shear strengths of Cr-plating coating on laser re-quenching substrate and laser non-treating one were measured by multi-cracks tensile method respectively.The experimental results show that the interfacial shear strength is increased by 77.7% through laser re-quenching steel substrate.The analysis of interface structure between substrate and Cr-coating shows that the interface of laser pretreatment is a continuous transition,while there is an over-layer on the original interface.The mechanical model analysis shows that the compressive residual stress in the laser processing zone could increases fracture stress of chromium coating and the improvement of substrate surface hardness decreases maximum crack spacing.The synthetic result of above two effecting factors is that the interfacial shear strength is increased by laser re-quenching substrate.
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    • References (11)
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