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Effect of grinding conditions on the fatigue life of titanium 5Al-2.5Sn alloyAn investigation into the effect of grinding conditions on the fatigue life of titanium 5Al-2.5Sn is presented. Damage to surface integrity and changes in the residual stresses distribution are studied to assess changes in fatigue life. A surface grinding machine, operating at speeds ranging from 2000 to 6000 fpm and using SiC wheels of grit sizes 60 and 120, was used to grind flat subsize specimens of 0.1-in. thickness. After grinding, the specimens were fatigued at a chosen stress and compared with the unadulterated material. A standard profilometer, a microhardness tester, and a scanning electron microscope were utilized to examine surface characteristics and measure roughness and hardness. Increased grinding speed in both wet and dry applications tended to decrease the fatigue life of the specimens. Fatigue life increased markedly at 2000 fpm under wet conditions, but then decreased at higher speeds. Grit size had no effect on the fatigue life.
Document ID
19910052664
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Rangaswamy, P. (Tuskegee Inst. AL, United States)
Terutung, H. (Tuskegee Inst. AL, United States)
Jeelani, S. (Tuskegee University AL, United States)
Date Acquired
August 15, 2013
Publication Date
May 15, 1991
Publication Information
Publication: Journal of Materials Science
Volume: 26
ISSN: 0022-2461
Subject Category
METALLIC MATERIALS
Funding Number(s)
CONTRACT_GRANT: NAG8-68
Distribution Limits
Public
Copyright
Other