Effects of process variables on interfacial quality of laser cladding on GH4133 alloy

Zheng Xiong; Guang-xia Chen; Xiao-yan Zeng

doi:10.1117/12.779216

1 November 2007 Effects of process variables on interfacial quality of laser cladding on GH4133 alloy

Zheng Xiong, Guang-xia Chen, Xiao-yan Zeng

Proceedings Volume 6423, International Conference on Smart Materials and Nanotechnology in Engineering; 64230D (2007) https://doi.org/10.1117/12.779216
Event: International Conference on Smart Materials and Nanotechnology in Engineering, 2007, Harbin, China

Abstract

The microstructure and mechanical properties of interface between GH4133 substrate and laser cladding were investigated experimentally. It was found that the process variables for laser cladding can result in the formation of incomplete fusion between the cladding layer and substrate or reheat cracking along the grain boundary in the coarse grain zone of the heat-affected zone (HAZ) during ageing treatment. The SEM and EDS analysis demonstrates that the chemical compositions in the crack and substrate are very similar and there is not precipitation in the crack. Therefore, the reheat cracking has nothing to do with liquid film on the grain boundaries, the possible cause of the formation of reheat cracking is that the plastic deformation caused by residual stress formed during thermal cycle of laser cladding concentrates on the coarse grain boundary in HAZ because precipitations precipitating in the grain during ageing treatment strengthen grain. The laser cladding layer with integrated melt interface and without reheat cracking can be obtained by optimizing laser power, scanning velocity and powder thickness. The experimental results of microhardness have shown that the microhardness of laser cladding layer is the same with that of GH4133 base metal after ageing treatment, thus the properties of the clad layer and the substrate are homogeneous.

Citation Download Citation

Zheng Xiong, Guang-xia Chen, and Xiao-yan Zeng "Effects of process variables on interfacial quality of laser cladding on GH4133 alloy", Proc. SPIE 6423, International Conference on Smart Materials and Nanotechnology in Engineering, 64230D (1 November 2007); https://doi.org/10.1117/12.779216

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Cladding

Interfaces

Laser processing

Chemical analysis

Laser bonding

Liquids

Metals

Show All Keywords

Keywords/Phrases

Search In:

Publication Years