The Influence of Hard Coatings on Fatigue Properties of Pure Titanium by a Novel Testing Method

被引：2
作者：
Hu, Cai [1 ,2 ]
Zhao, Lei [3 ]
Zhang, Yong [1 ]
Du, Zhinan [2 ]
Deng, Yunlai [1 ]
机构：
[1] Cent South Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China
[2] Aviat Ind Corp China Ltd, Mfg Technol Inst, Beijing 100024, Peoples R China
[3] Beijing Satellite Mfg Co Ltd, Beijing 100094, Peoples R China
来源：
MATERIALS | 2024年 / 17卷 / 04期
关键词：
hard coatings; fatigue properties; pure titanium; fatigue cracks; BEHAVIOR; STEEL; STRENGTH; ALLOY; PERFORMANCE; FRICTION; WEAR;
D O I：
10.3390/ma17040835
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
This study investigates the impact of hard coatings on the fatigue properties of pure titanium. A specialized fatigue test which ensured machine equivalence was conducted to compare the fatigue behavior of coated and uncoated metals. The findings reveal that the application of coatings adversely affects the fatigue properties of pure titanium due to stress concentration from the coating, which accelerates fatigue crack propagation within the substrate material. Notably, zigzag fatigue cracks at the interface between the coating and substrate and multiple micro-cracks initiated within the coating are found.
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页数：12
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