Microstructure and properties of a laser cladded NiCrBSi alloy coating
-
L. Yinghua
and
W. Kaiming
Abstract
Laser cladded NiCrBSi alloy coating was fabricated on the surface of a 42CrMo roll using a 6 kW fiber laser. The effects of the laser power, scanning speed and feeding rate on the cladding layer form, size, dilution rate, microstructure, and hardness of coating were studied by using optical microscopy (OM), scanning electron microscopy (SEM) and a microhardness tester. The results show that the microstructure, size, dilution rate and hardness of the cladding layer had changed with an increase in laser power, powder feeding rate and scanning speed. The appropriate parameters of the laser cladding experiment are as follows: the laser power is 2000 W, powder feed rate 20 g × min-1, the scanning speed 4 mm × s-1. The cladding layer and the substrate exhibit good metallurgical bonding under the above processing parameters. The microstructure of the cladding layer is fine, the dilution rate is 9.8 wt.-%, and the microhardness of the cladding layer is 710.7 HV.
© 2020 by Walter de Gruyter Berlin/Boston
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Articles in the same Issue
- CONTENTS
- Materials Testing
- FACHBEITRÄGE
- New alloy development from modified cast Ni-base superalloy GTD-111 with additions of Al, Ni and/or Co prepared by vacuum arc melting process
- Enhancing a twist beam suspension system conceptual design using population-based optimization methods
- Influence of alumina whisker or nano-carbon contents on the microstructure and mechanical properties of CuZrTiAlNi refractory high entropy alloy composites
- Mechanical properties and fatigue behavior of CO2 laser beam welded armor steel joints
- Microstructure and properties of a laser cladded NiCrBSi alloy coating
- Dynamic response and damage assessment of spherical robot GFRP spherical shell under low velocity impact
- Influence of temperature on structural-phase changes and physical properties of ceramics on the basis of aluminum oxide and silicon
- Effect of the temperature gradient on hot cracking susceptibility for electron beam welding Alloy 247 LC
- Effect of copper or carbon fiber addition to the 3D printing of polylactid samples
- Theoretical evaluation of abrasive wear behavior of B4C/ FeCrC coating layer evaluated by a Taguchi approach
- Effect of the welding parameters on the surface morphology of resistance spot welded AISI 304 stainless steel joints
- Sine-cosine optimization algorithm for the conceptual design of automobile components
- Design and optimization of an electromechanical actuator for the latch of a foldable vehicle seat
- Design and analysis of a pressure vessel according to EU 2014/29
- BEZUGSQUELLEN
- IMPRESSUM
