A novel cold expansion process for improving the surface integrity and fatigue life of small-deep holes in Inconel 718 superalloys
Abstract
• A novel cold expansion process called the MBR-CEP for improving the surface integrity and fatigue life of small-deep holes is proposed. • The surface integrity state of small deep holes before and after the MBR-CEP is systematically analysed. • The average fatigue life of small deep holes after the MBR-CEP with expansion degree of 2.6% is increased by 8.05 times. • The reasons of fatigue life improvement are discussed in combination with...
Paper Details
Title
A novel cold expansion process for improving the surface integrity and fatigue life of small-deep holes in Inconel 718 superalloys
Published Date
Jan 1, 2022
Volume
154
Pages
106544 - 106544
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