Prediction of thermomechanical fatigue life in RuT450 compacted graphite cast iron cylinder heads using the Neu/Sehitoglu model

doi:10.1016/j.engfailanal.2023.107767

IMR OpenIR

	Prediction of thermomechanical fatigue life in RuT450 compacted graphite cast iron cylinder heads using the Neu/Sehitoglu model
	Jing, Guoxi 1,2; Sun, Shuai 1,2; Ma, Teng 1,2; Li, Shubo 1,2; Ma, Tian 1,2; Wei, Junchao 3; Pang, Jianchao 4
通讯作者	Ma, Teng(mxc200523@sina.com)
	2024-02-01
发表期刊	ENGINEERING FAILURE ANALYSIS
ISSN	1350-6307
卷号	156 页码:27
摘要	The increase in engine power has resulted in a significant rise in both thermal and mechanical loads on cylinder heads, leading to the emergence of thermomechanical fatigue (TMF) as one of the significant issues. This paper proposed a parameter identification method for the Neu/Sehitoglu model, utilizing multi-objective optimization (MOO), and applied it to predict the TMF life of compacted graphite cast iron (CGI) material used in cylinder heads. The study assessed the TMF behavior of RuT450 material through various experiments, including tensile, low cycle fatigue (LCF), creep, TMF, and oxidation experiments. Employing the MOO, the unknown model parameters are estimated and optimized to predict the TMF life of RuT450 materials. Results demonstrated that over 95% of the predicted TMF life falls within twice the error band of experimental values. Furthermore, plastic strain amplitude, temperature, and strain rate significantly influenced the damage mechanism and life prediction. The TMF life under out-of-phase (OP) loading conditions was found to be smaller than that of in-phase (IP) loading. Notably, under out-of-phase thermomechanical fatigue (OP TMF), oxidation damage and fatigue damage together contributed to over 95% of the total damage in RuT450 materials. Moreover, variations in oxidation damage parameters had a considerable impact on the predicted life. This study might offer an effective method for determining Neu/Sehitoglu model parameters and establish material boundaries for TMF life assessment of cylinder heads.
关键词	Compacted graphite cast iron Thermomechanical fatigue Multi -objective optimization Life prediction
资助者	Foundation of National Defense Science and Technology Key Laboratory
DOI	10.1016/j.engfailanal.2023.107767
收录类别	SCI
语种	英语
资助项目	Foundation of National Defense Science and Technology Key Laboratory[6142212220304]
WOS研究方向	Engineering ; Materials Science
WOS类目	Engineering, Mechanical ; Materials Science, Characterization & Testing
WOS记录号	WOS:001125920400001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/182881
专题	中国科学院金属研究所
通讯作者	Ma, Teng
作者单位	1.Hebei Univ Technol, Sch Mech Engn, Tianjin 300400, Peoples R China 2.Tianjin Key Lab Power Transmiss & Safety Technol N, Tianjin 300400, Peoples R China 3.China North Engine Res Inst, Natl Key Lab Diesel Engine Turbocharging Technol, Tianjin 300400, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Jing, Guoxi,Sun, Shuai,Ma, Teng,et al. Prediction of thermomechanical fatigue life in RuT450 compacted graphite cast iron cylinder heads using the Neu/Sehitoglu model[J]. ENGINEERING FAILURE ANALYSIS,2024,156:27.
APA	Jing, Guoxi.,Sun, Shuai.,Ma, Teng.,Li, Shubo.,Ma, Tian.,...&Pang, Jianchao.(2024).Prediction of thermomechanical fatigue life in RuT450 compacted graphite cast iron cylinder heads using the Neu/Sehitoglu model.ENGINEERING FAILURE ANALYSIS,156,27.
MLA	Jing, Guoxi,et al."Prediction of thermomechanical fatigue life in RuT450 compacted graphite cast iron cylinder heads using the Neu/Sehitoglu model".ENGINEERING FAILURE ANALYSIS 156(2024):27.