Experimental investigation on the water droplet erosion characteristics of blade materials for steam turbine-Reference-Cited by-同舟云学术

Experimental investigation on the water droplet erosion characteristics of blade materials for steam turbine

Published:2020-12-20 Issue:20 Volume:235 Page:5103-5115
ISSN:0954-4062
Container-title:Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science
language:en
Short-container-title:Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science

Author:

Zhang Zheyuan¹,Yang Bin¹,Zhang Di²,Xie Yonghui¹^ORCID

Affiliation:

1. State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, China

2. MOE Key Laboratory of Thermo-Fluid Science and Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, China

Abstract

In this paper, the water droplet erosion ( WDE) characteristics of four blade materials under different high-speed liquid-solid impingement conditions are tested with the experimental steps and data processing methods in ASTM-G73. On the basis of cumulative erosion curves, the maximum erosion rate ( ERmax) is obtained to analyze the WDE resistance of the testing materials quantitatively. The effects of target surface roughness, impact angle and impact velocity on the WDE characteristics of blade materials under specific working conditions are studied. The velocity coefficients ( n) of the testing materials under high-speed liquid-solid impact are analyzed. In order to investigate the mechanism of WDE, the material failure characteristics and shallow layer hardness ( SLH) at three characteristic moments corresponding to different WDE periods, are investigated with the SEM morphology of erosion section and hardness distribution along the depth direction at the impact position. The research results can provide reference data and technical support for the structure design and material selection of steam turbine blades.

Publisher

SAGE Publications

Subject

Mechanical Engineering

Link

http://journals.sagepub.com/doi/pdf/10.1177/0954406220979730

Reference20 articles.

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