STUDIES ON PHYSICAL, MICRO-STRUCTURAL, AND SLURRY EROSION BEHAVIOR OF COLD-SPRAYED Ni–20Cr+TiC+Re COATINGS ON SA516 STEEL FOR HIGH-TEMPERATURE APPLICATIONS

Yadvinder Singh (), Shubham Sharma, Gurpreet Singh (), Gursharan Singh (), Jujhar Singh (), Shashi Prakash Dwivedi (), Sunpreet Singh, Ranvijay Kumar (), S. Chattopadhyaya () and Changhe Li ()
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Yadvinder Singh: Department of Mechanical Engineering, IK Gujral Punjab Technical University, Main Campus-Kapurthala, Jalandhar, 144603, Punjab, India
Shubham Sharma: Department of Mechanical Engineering, IK Gujral Punjab Technical University, Main Campus-Kapurthala, Jalandhar, 144603, Punjab, India†Department of Mechanical Engineering, University Centre for Research and Development and Chandigarh University, 140413, Punjab, India
Gurpreet Singh: Department of Mechanical Engineering, IK Gujral Punjab Technical University, Main Campus-Kapurthala, Jalandhar, 144603, Punjab, India
Gursharan Singh: Department of Mechanical Engineering, IK Gujral Punjab Technical University, Main Campus-Kapurthala, Jalandhar, 144603, Punjab, India
Jujhar Singh: Department of Mechanical Engineering, IK Gujral Punjab Technical University, Main Campus-Kapurthala, Jalandhar, 144603, Punjab, India
Shashi Prakash Dwivedi: ��G.L. Bajaj Institute of Technology & Management, Greater Noida, Gautam Buddha Nagar, 201310, U.P., India
Sunpreet Singh: ��Department of Mechanical Engineering, University Centre for Research and Development and Chandigarh University, 140413, Punjab, India§Department of Mechanical Engineering, National University of Singapore, Singapore 1157, Singapore
Ranvijay Kumar: ��Department of Mechanical Engineering, University Centre for Research and Development and Chandigarh University, 140413, Punjab, India
S. Chattopadhyaya: �Indian Institute of Technology, Hirapur, Sardar Patel Nagar, Dhanbad 826004, Jharkhand India
Changhe Li: ��School of Mechanical and Automotive Engineering, Qingdao University of Technology, Qingdao 266520, P. R. China

Surface Review and Letters (SRL), 2023, vol. 30, issue 04, 1-21

Abstract: In this paper, three kinds of Ni–20Cr coatings were deposited on SA516 substrate steel by cold-sprayed coating technique. Physical properties (such as hardness, surface roughness, and residual stress) and slurry erosion behavior (with impingement angles of 30∘ and 90∘) of cold-sprayed substrates have been evaluated. Moreover, a scanning electron microscope (SEM) examination has been performed to evaluate the morphological characterization of various coatings. It has been found that the residual stresses induced in the coated specimens exhibited compressive nature. Further, micro-hardness and surface roughness was observed to proliferate with the incorporation of titanium carbide (TiC) and rhenium (Re) in Ni–Cr coatings. Micro-hardness for Ni–20Cr+TiC and Ni–20Cr+TiC+Re was observed at 233.67 and 278.9 Hv, respectively, where Surface roughness for Ni–20Cr+TiC and Ni–20Cr+TiC+Re was observed at 9.86 and 11.68μm, respectively. All types of Ni–20Cr coatings were quite efficient in reducing the erosion rate of the SA516 steel as compared to uncoated SA516 and most prominent of all was Ni–20Cr+Tic+Re coating. It was observed that at 30∘, weight loss for Ni–20Cr, Ni–20Cr+TiC and Ni–20Cr+TiC+Re was up to 0.00027, 0.00015 and 0.00012 g/mm2, whereas at 90∘, weight loss was for Ni–20Cr, Ni–20Cr+TiC and Ni–20Cr+TiC+Re was up to 0.00024, 0.00014 and 0.00012 g/mm2.

Keywords: Cold spray; mechanical properties; stainless steel; slurry erosion; morphology (search for similar items in EconPapers)
Date: 2023
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DOI: 10.1142/S0218625X2350021X

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