中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 金属研究所
  3. 中国科学院金属研究所
Comprehensive damage and deformation mechanisms during out-of-phase thermal mechanical fatigue of the fourth-generation single crystal superalloy

文献类型：期刊论文

作者Tan, Zihao2,3; Wang, Xinguang3; Li, Yongmei2,3; Yang, Yanhong3; Du, Yunling1; Ge, Zhicheng4; Liu, Jide3; Liu, Jinlai3; Li, Jinguo3; Zhou, Yizhou3
刊名INTERNATIONAL JOURNAL OF FATIGUE
出版日期2024
卷号178页码:14
关键词Fourth-generation single crystal superalloy Thermomechanical fatigue Oxidation behavior Deformation twin Damage mechanism
ISSN号0142-1123
DOI10.1016/j.ijfatigue.2023.107990
通讯作者Wang, Xinguang(xgwang11b@imr.ac.cn) ; Yang, Yanhong(yhyang@imr.ac.cn)
英文摘要To shed light on the stability and reliability of the fourth-generation single crystal (SX) superalloy during inservice operation, out-of-phase (OP)- thermal mechanical fatigue (TMF) experiments were systematically carried out. The TMF behavior, deformation and damage mechanisms were thoroughly investigated. The results showed that at comparatively low strain ranges (0.5% and 0.6%), the dislocation movements were basically concentrated in gamma matrix and the TMF life was basically governed by high-temperature oxidation. More locally, the fatigue cracks initiated from the spalling of surface oxides, while the discontinuous Al2O3 layer could only provide limited protective resistance to crack propagation. Additionally, deformation twins could nucleate in the vicinity of micropores or crack tips, which further induced more complex defects and accelerated the fatigue fracture of the alloy. Nevertheless, as the strain range reached 0.8% and 0.9%, the nucleation and extension of micro-twins were independent on the defects, the mechanisms of twinning-shearing and anti-phase boundary (APB)-shearing were observed throughout the specimen. Under these conditions, the fatigue cracks basically initiated from the severe plastic deformation, which resulted in the much-reduced TMF life of the specimen. Ultimately, salutary guidance for the further application of fourth-generation SX superalloys was rationally summarized.
资助项目National Key R & D Program of China[2017YFA0700704] ; Youth Innovation Promotion Association, Chinese Academy of Sciences, National Science and Tech- nology Major Project[2017 -VI -0002-0072] ; Middle-aged and Youth Talents in Scientific and Technological Innovation Project of Shenyang[RC220440] ; Excellent Youth Foundation of Liaoning Province[2021-YQ-02]
WOS研究方向Engineering ; Materials Science
语种英语
WOS记录号WOS:001091655700001
出版者ELSEVIER SCI LTD
资助机构National Key R & D Program of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences, National Science and Tech- nology Major Project ; Middle-aged and Youth Talents in Scientific and Technological Innovation Project of Shenyang ; Excellent Youth Foundation of Liaoning Province
源URL[http://ir.imr.ac.cn/handle/321006/177997]  
专题金属研究所_中国科学院金属研究所
通讯作者Wang, Xinguang; Yang, Yanhong
作者单位1.Liaoning Petrochem Univ, Sch Mech Engn, Fushun 113001, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
3.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China
4.Inst Corros Sci & Technol, Guangzhou 510530, Peoples R China
推荐引用方式
GB/T 7714		 Tan, Zihao,Wang, Xinguang,Li, Yongmei,et al. Comprehensive damage and deformation mechanisms during out-of-phase thermal mechanical fatigue of the fourth-generation single crystal superalloy[J]. INTERNATIONAL JOURNAL OF FATIGUE,2024,178:14.
APA Tan, Zihao.,Wang, Xinguang.,Li, Yongmei.,Yang, Yanhong.,Du, Yunling.,...&Sun, Xiaofeng.(2024).Comprehensive damage and deformation mechanisms during out-of-phase thermal mechanical fatigue of the fourth-generation single crystal superalloy.INTERNATIONAL JOURNAL OF FATIGUE,178,14.
MLA Tan, Zihao,et al."Comprehensive damage and deformation mechanisms during out-of-phase thermal mechanical fatigue of the fourth-generation single crystal superalloy".INTERNATIONAL JOURNAL OF FATIGUE 178(2024):14.

入库方式： OAI收割

来源：金属研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。