IMR OpenIR
Effect of corrosion attack on the fatigue behavior of an as-cast Mg-7%Gd-5%Y-1%Nd-0.5%Zr alloy
Wang, S. D.; Xu, D. K.; Wang, B. J.; Han, E. H.; Dong, C.; dkxu@imr.ac.cn
2015
Source PublicationMATERIALS & DESIGN
ISSN0261-3069
Volume84Pages:185-193
AbstractThrough investigating and comparing the fatigue behavior of an as-cast Mg-7%Gd-5%Y-1%Nd-0.5%Zr alloy in both laboratory air and 3.5 wt.% NaCl solution, the effect of corrosion attack on fatigue crack initiation has been disclosed. The S-N curves showed that the fatigue strength in air was 120 MPa and not sensitive to the loading frequency, whereas the fatigue strength in NaCl solution decreased from 80 MPa to 60 MPa with the loading frequency decreasing from 20 Hz to 5 Hz. Observations to fracture surfaces demonstrated that in air, fatigue cracks preferentially initiated at the oxide inclusions. However, the fatigue crack initiation in NaCl solution was associated with corrosion pits. Moreover, multiple fatigue cracks initiated at pits on fracture surfaces of corrosion fatigue failed samples when the loading frequency decreased to 5 Hz. Based on the measured "defect area" of oxide inclusions, the predicted fatigue strength in air could be well fitted with the experimental data. However, due to the occurrence of hydrogen embrittlement and crack initiation at multiple sites, the fatigue strength of samples tested in NaCl solution cannot be predicted.
description.department[wang, s. d. ; dong, c.] dalian univ technol, sch mat sci & engn, lab mat modificat laser electron & ion beams, dalian 116024, peoples r china ; [wang, s. d. ; xu, d. k. ; wang, b. j. ; han, e. h.] chinese acad sci, inst met res, environm corros ctr, shenyang 110016, peoples r china
KeywordMg Alloy Corrosion Cyclic Loading Fatigue Crack Initiation Fatigue Behavior
Funding OrganizationNational Natural Science Foundation of China projects [51271183, 51171192, 51301172]; National Basic Research Program of China (973 Program); Innovation Fund of Institute of Metal Research (IMR), Chinese Academy of Science (CAS) [2013CB632205]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/74742
Collection中国科学院金属研究所
Corresponding Authordkxu@imr.ac.cn
Recommended Citation
GB/T 7714
Wang, S. D.,Xu, D. K.,Wang, B. J.,et al. Effect of corrosion attack on the fatigue behavior of an as-cast Mg-7%Gd-5%Y-1%Nd-0.5%Zr alloy[J]. MATERIALS & DESIGN,2015,84:185-193.
APA Wang, S. D.,Xu, D. K.,Wang, B. J.,Han, E. H.,Dong, C.,&dkxu@imr.ac.cn.(2015).Effect of corrosion attack on the fatigue behavior of an as-cast Mg-7%Gd-5%Y-1%Nd-0.5%Zr alloy.MATERIALS & DESIGN,84,185-193.
MLA Wang, S. D.,et al."Effect of corrosion attack on the fatigue behavior of an as-cast Mg-7%Gd-5%Y-1%Nd-0.5%Zr alloy".MATERIALS & DESIGN 84(2015):185-193.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Wang, S. D.]'s Articles
[Xu, D. K.]'s Articles
[Wang, B. J.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wang, S. D.]'s Articles
[Xu, D. K.]'s Articles
[Wang, B. J.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wang, S. D.]'s Articles
[Xu, D. K.]'s Articles
[Wang, B. J.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.