High-temperature fatigue damage mechanism and strength prediction of vermicular graphite iron

被引：9
作者：
Chen, Y. [1 ,2 ]
Pang, J. C. [1 ]
Zou, C. L. [1 ]
Li, S. X. [1 ]
Zhang, Z. F. [1 ,2 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, 72 Wenhua Rd, Shenyang 110016, Peoples R China
[2] Zhengzhou Univ, Henan Inst Adv Technol, 97 Wenhua Rd, Zhengzhou 450001, Peoples R China
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2023年 / 168卷
基金：
中国国家自然科学基金;
关键词：
Vermicular graphite iron; High-temperature fatigue; Microstructures; Damage mechanism; Fatigue strength prediction; THERMOMECHANICAL FATIGUE; TENSILE-STRENGTH; PRACTICAL MODEL; TRANSITION; INCLUSIONS; SELECTION; DESIGN; LIMIT;
D O I：
10.1016/j.ijfatigue.2022.107477
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The high-temperature tensile properties, high-cycle fatigue properties and related damage mechanisms of vermicular graphite iron (VGI) with different microstructures at 500 degrees C were investigated. It is found that compared with ferritic VGI, pearlitic VGI has higher tensile strength and fatigue strength. The tensile strength shows a linear increasing trend with the increase of pearlite content. For ferritic VGI, fatigue cracks initiate at the graphite/ferrite interface, the ferrite grain boundary softens at high temperature, and cracks propagate along the grain boundary. In pearlitic VGI, fatigue cracks can also initiate at the graphite/pearlite interface due to oxidative debonding, and oxidation accelerates the initiation and propagation of fatigue cracks. Considering the influence of microstructures and temperature, a new method for predicting the high-temperature fatigue strength of VGI was proposed. This method has high prediction accuracy and suits for VGI from the room temperature to the high-temperature.
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页数：13
相关论文
共 33 条
[1]  
Budynas RG, 2014, SHIGLEYS MECH ENG DE, V10th, P299
[2]   A STUDY OF TENSILE PROPERTIES OF FERRITIC COMPACTED GRAPHITE CAST IRONS AT INTERMEDIATE TEMPERATURES [J].
CHAO, CG ;
LUI, TS ;
HON, MH .
JOURNAL OF MATERIALS SCIENCE, 1989, 24 (07) :2610-2614
[3]   Damage mechanism and fatigue strength prediction of compacted graphite iron with different microstructures [J].
Chen, Y. ;
Pang, J. C. ;
Li, S. X. ;
Zou, C. L. ;
Zhang, Z. F. .
INTERNATIONAL JOURNAL OF FATIGUE, 2022, 164
[4]   High-Temperature Oxidation Behavior and Related Mechanism of RuT400 Vermicular Graphite Iron [J].
Chen, Yu ;
Pang, Jian-chao ;
Li, Shou-xin ;
Zhang, Zhe-feng .
ACTA METALLURGICA SINICA-ENGLISH LETTERS, 2022, 35 (07) :1117-1130
[5]   On a new temperature factor to predict the fatigue limit at different temperatures [J].
Costa, N. ;
Silva, F. S. .
INTERNATIONAL JOURNAL OF FATIGUE, 2011, 33 (04) :624-631
[6]   Measurement and characterization of Thermo-Mechanical Fatigue in Compacted Graphite Iron [J].
Ghodrat, S. ;
Riemslag, A. C. ;
Janssen, M. ;
Sietsma, J. ;
Kestens, L. A. I. .
INTERNATIONAL JOURNAL OF FATIGUE, 2013, 48 :319-329
[7]   Investigation into diesel engine cylinder head failure [J].
Jing, Guo Xi ;
Zhang, Meng Xiao ;
Qu, Shen ;
Pang, Jian Chao ;
Fu, Chang Ming ;
Dong, Chen ;
Li, Shou Xin ;
Xu, Chun Guang ;
Zhang, Zhe Feng .
ENGINEERING FAILURE ANALYSIS, 2018, 90 :36-46
[8]   Mechanical, wear and heat exposure properties of compacted graphite cast iron at elevated temperatures [J].
Kim, Sugwon ;
Cockcroft, S. L. ;
Omran, A. M. ;
Hwang, Honam .
JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 487 (1-2) :253-257
[9]   High-cycle fatigue properties prediction and damage mechanisms of RuT400 compacted graphite iron at different temperatures [J].
Liu, Qingyi ;
Zhu, Gang ;
Pang, Jianchao ;
Liu, Feng ;
Li, Shouxin ;
Guo, Changliang ;
Jiang, Ailong ;
Zhang, Zhefeng .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2019, 764
[10]   A practical model for efficient anti-fatigue design and selection of metallic materials: II. Parameter analysis and fatigue strength improvement [J].
Liu, R. ;
Zhang, P. ;
Zhang, Z. J. ;
Wang, B. ;
Zhang, Z. F. .
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY, 2021, 70 :250-267
1234