Effect of Low Cycle Fatigue Predamage on Very High Cycle Fatigue Behavior of TC21 Titanium Alloy

被引：17

作者：

Nie, Baohua ^{[1
]}

Zhao, Zihua ^{[2
]}

Ouyang, Yongzhong ^{[3
]}

Chen, Dongchu ^{[1
]}

Chen, Hong ^{[1
]}

Sun, Haibo ^{[1
]}

Liu, Shu ^{[1
]}

机构：

[1] Foshan Univ, Sch Mat Sci & Energy Engn, Foshan 528000, Peoples R China

[2] Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China

[3] Foshan Univ, Sch Environm & Chem Engn, Foshan 528000, Peoples R China

来源：

MATERIALS | 2017年 / 10卷 / 12期

基金：

中国国家自然科学基金;

关键词：

very high cycle fatigue; fatigue predamage; titanium alloy; LCF; CRACK-PROPAGATION; INITIATION; GROWTH; MICROSTRUCTURE;

D O I：

10.3390/ma10121384

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：

The effect of low cycle fatigue (LCF) predamage on the subsequent very high cycle fatigue (VHCF) behavior is investigated in TC21 titanium alloy. LCF predamage is applied under 1.8% strain amplitude up to various fractions of the expected life and subsequent VHCF properties are determined using ultrasonic fatigue tests. Results show that 5% of predamage insignificantly affects the VHCF limit due to the absence of precrack, but decreases the subsequent fatigue crack initiation life estimated by the Pairs law. Precracks introduced by 10% and 20% of predamage significantly reduce the subsequent VHCF limits. The crack initiation site shifts from subsurface-induced fracture for undamaged and 5% predamaged specimens to surface precrack for 10% and 20% predamaged specimens in very high cycle region. Furthermore, the predicted fatigue limits based on the El Haddad modified model for the predamaged specimens agree with the experimental results.

引用

页数：14

共 26 条

[1]

Bathias C., 2005, GIGACYCLE FATIGUE IN

[2] Piezoelectric fatigue testing machines and devices [J].

Bathias, Claude .

INTERNATIONAL JOURNAL OF FATIGUE, 2006, 28 (11) :1438-1445

[3] Duality of the S-N fatigue curve caused by competing failure modes in a titanium alloy and the role of Poisson defect statistics [J].

Chandran, KSR ;

Jha, SK .

ACTA MATERIALIA, 2005, 53 (07) :1867-1881

[4]

Chen W. L. F., 2008, THESIS

[5] Influence of microstructure [alpha plus beta and beta] on very high cycle fatigue behaviour of Ti-6Al-4V alloy [J].

Crupi, Vincenzo ;

Epasto, Gabriella ;

Guglielmino, Eugenio ;

Squillace, Antonino .

INTERNATIONAL JOURNAL OF FATIGUE, 2017, 95 :64-75

[6] Very High Cycle Fatigue Failure Analysis and Life Prediction of Cr-Ni-W Gear Steel Based on Crack Initiation and Growth Behaviors [J].

Deng, Hailong ;

Li, Wei ;

Sakai, Tatsuo ;

Sun, Zhenduo .

MATERIALS, 2015, 8 (12) :8338-8354

[7] FATIGUE CRACK-PROPAGATION OF SHORT CRACKS [J].

ELHADDAD, MH ;

SMITH, KN ;

TOPPER, TH .

JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY-TRANSACTIONS OF THE ASME, 1979, 101 (01) :42-46

[8] ON THE CALCULATION OF CLOSURE-FREE FATIGUE-CRACK PROPAGATION DATA IN MONOLITHIC METAL-ALLOYS [J].

HERTZBERG, RW .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1995, 190 (1-2) :25-32

[9] Cumulative fatigue damage in low cycle fatigue and gigacycle fatigue for low carbon-manganese steel [J].

Huang, Zhi Yong ;

Wagner, Daniele ;

Bathias, Claude ;

Chaboche, Jean Louis .

INTERNATIONAL JOURNAL OF FATIGUE, 2011, 33 (02) :115-121

[10] Effect of low cycle fatigue pre-damage on very high cycle fatigue [J].

Huang, Zhiyong ;

Wang, Qingyuan ;

Wagner, Daniele ;

Bathias, Claude .

THEORETICAL AND APPLIED MECHANICS LETTERS, 2012, 2 (03) :031007

← 1 2 3 →