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Stacking faults in Zr(Fe, Cr)(2) Laves structured secondary phase particle in Zircaloy-4 alloy
Liu, CZ; Li, GP; Yuan, FS; Han, FZ; Zhang, YD; Gu, HF; Li, GP (reprint author), Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
2018-02-07
Source PublicationNANOSCALE
ISSN2040-3364
Volume10Issue:5Pages:2249-2254
AbstractStacking faults (SFs) in secondary phase particles (SPPs), which generally crystallize in the Laves phase in Zircaloy-4 (Zr-4) alloy, have been frequently observed by researchers. However, few investigations on the nano-scale structure of SFs have been carried out. In the present study, an SF containing C14 structured SPP, which located at grain boundaries (GBs) in the alpha-Zr matrix, was chosen to be investigated, for its particular substructure as well as location, aiming to reveal the nature of the SFs in the SPPs in Zr-4 alloy. It was indicated that the SFs in the C14 structured SPP actually existed in the local C36 structured Laves phase, for their similarities in crystallography. The C14 -> C36 phase transformation, which was driven by synchroshearing among the (0001) basal planes, was the formation mechanism of the SFs in the SPPs. By analyzing the strained regions near the SPP, a model for understanding the driving force of the synchroshear was proposed: the interaction between SPP and GB resulted in the Zener pinning effect, leading to the shearing parallel to the (0001) basal planes of the C14 structured SPP, and the synchroshear was therefore activated.; Stacking faults (SFs) in secondary phase particles (SPPs), which generally crystallize in the Laves phase in Zircaloy-4 (Zr-4) alloy, have been frequently observed by researchers. However, few investigations on the nano-scale structure of SFs have been carried out. In the present study, an SF containing C14 structured SPP, which located at grain boundaries (GBs) in the alpha-Zr matrix, was chosen to be investigated, for its particular substructure as well as location, aiming to reveal the nature of the SFs in the SPPs in Zr-4 alloy. It was indicated that the SFs in the C14 structured SPP actually existed in the local C36 structured Laves phase, for their similarities in crystallography. The C14 -> C36 phase transformation, which was driven by synchroshearing among the (0001) basal planes, was the formation mechanism of the SFs in the SPPs. By analyzing the strained regions near the SPP, a model for understanding the driving force of the synchroshear was proposed: the interaction between SPP and GB resulted in the Zener pinning effect, leading to the shearing parallel to the (0001) basal planes of the C14 structured SPP, and the synchroshear was therefore activated.
description.department[liu, chengze ; li, geping ; yuan, fusen ; han, fuzhou ; zhang, yingdong ; gu, hengfei] chinese acad sci, inst met res, 72 wenhua rd, shenyang 110016, liaoning, peoples r china ; [liu, chengze ; yuan, fusen ; han, fuzhou ; zhang, yingdong] univ sci & technol china, sch mat sci & engn, 96 jinzhai rd, hefei 230026, anhui, peoples r china ; [gu, hengfei] univ chinese acad sci, 19 yuquan rd, beijing 100049, peoples r china
KeywordFe Cr Transformations
Subject AreaChemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79520
Collection中国科学院金属研究所
Corresponding AuthorLi, GP (reprint author), Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
Recommended Citation
GB/T 7714
Liu, CZ,Li, GP,Yuan, FS,et al. Stacking faults in Zr(Fe, Cr)(2) Laves structured secondary phase particle in Zircaloy-4 alloy[J]. NANOSCALE,2018,10(5):2249-2254.
APA Liu, CZ.,Li, GP.,Yuan, FS.,Han, FZ.,Zhang, YD.,...&Li, GP .(2018).Stacking faults in Zr(Fe, Cr)(2) Laves structured secondary phase particle in Zircaloy-4 alloy.NANOSCALE,10(5),2249-2254.
MLA Liu, CZ,et al."Stacking faults in Zr(Fe, Cr)(2) Laves structured secondary phase particle in Zircaloy-4 alloy".NANOSCALE 10.5(2018):2249-2254.
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