3D Residual Strain in DKDP Crystals by Neutron Diffraction

Fafu Liu; Xun Sun; Guangai Sun; Jianwu Cao; Xiaoming Mu; Zaizai Guo; Qingxi Yuan

doi:10.1002/crat.201900022

3D Residual Strain in DKDP Crystals by Neutron Diffraction

Fafu Liu^*
, Xun Sun
, Guangai Sun
, Jianwu Cao
, Xiaoming Mu
, Zaizai Guo
, Qingxi Yuan

^*此作品的通讯作者

材料学院

Beijing Institute of Technology
Shandong University
China Academy of Engineering Physics
CAS - Institute of High Energy Physics

科研成果: 期刊稿件 › 文章 › 同行评审

4 引用（Scopus）

摘要

Neutron diffraction technique is applied to study the three-dimensional (3D) residual strains in K(H₁₋ _xD_x)₂PO₄ (DKDP) crystals with various deuterium contents (0 ≤ x ≤ 0.99). It is found that the residual strains in the crystalline coordinate are at the magnitude of 10⁻³ to 10⁻⁴. The results show that the level of the macro-strain in the crystal bulk is independent of the deuteration level. However, when the deuteration level is below 50%, the average of micro-strain increases first with the increasing of deuteration level, then decreases when the deuteration level is in excess of 50%. According to the residual strains, the internal stresses are calculated through σ_ij = C_ijklε_kl. Finally, the potential sources of the stresses in crystals are discussed and analyzed.

源语言	英语
文章编号	1900022
期刊	Crystal Research and Technology
卷	54
期	9
DOI	https://doi.org/10.1002/crat.201900022
出版状态	已出版 - 1 9月 2019

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10.1002/crat.201900022

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@article{f219db81bb4d40d8bdae8058815c3b9a,

title = "3D Residual Strain in DKDP Crystals by Neutron Diffraction",

abstract = "Neutron diffraction technique is applied to study the three-dimensional (3D) residual strains in K(H1− xDx)2PO4 (DKDP) crystals with various deuterium contents (0 ≤ x ≤ 0.99). It is found that the residual strains in the crystalline coordinate are at the magnitude of 10−3 to 10−4. The results show that the level of the macro-strain in the crystal bulk is independent of the deuteration level. However, when the deuteration level is below 50\%, the average of micro-strain increases first with the increasing of deuteration level, then decreases when the deuteration level is in excess of 50\%. According to the residual strains, the internal stresses are calculated through σij = Cijklεkl. Finally, the potential sources of the stresses in crystals are discussed and analyzed.",

keywords = "DKDP crystal, KHPO, deuterium-doped KDP, neutron diffraction, residual strain",

author = "Fafu Liu and Xun Sun and Guangai Sun and Jianwu Cao and Xiaoming Mu and Zaizai Guo and Qingxi Yuan",

note = "Publisher Copyright: {\textcopyright} 2019 WILEY-VCH Verlag GmbH \& Co. KGaA, Weinheim",

year = "2019",

month = sep,

day = "1",

doi = "10.1002/crat.201900022",

language = "English",

volume = "54",

journal = "Crystal Research and Technology",

issn = "0232-1300",

publisher = "John Wiley \& Sons Inc.",

number = "9",

}

TY - JOUR

T1 - 3D Residual Strain in DKDP Crystals by Neutron Diffraction

AU - Liu, Fafu

AU - Sun, Xun

AU - Sun, Guangai

AU - Cao, Jianwu

AU - Mu, Xiaoming

AU - Guo, Zaizai

AU - Yuan, Qingxi

PY - 2019/9/1

Y1 - 2019/9/1

N2 - Neutron diffraction technique is applied to study the three-dimensional (3D) residual strains in K(H1− xDx)2PO4 (DKDP) crystals with various deuterium contents (0 ≤ x ≤ 0.99). It is found that the residual strains in the crystalline coordinate are at the magnitude of 10−3 to 10−4. The results show that the level of the macro-strain in the crystal bulk is independent of the deuteration level. However, when the deuteration level is below 50%, the average of micro-strain increases first with the increasing of deuteration level, then decreases when the deuteration level is in excess of 50%. According to the residual strains, the internal stresses are calculated through σij = Cijklεkl. Finally, the potential sources of the stresses in crystals are discussed and analyzed.

AB - Neutron diffraction technique is applied to study the three-dimensional (3D) residual strains in K(H1− xDx)2PO4 (DKDP) crystals with various deuterium contents (0 ≤ x ≤ 0.99). It is found that the residual strains in the crystalline coordinate are at the magnitude of 10−3 to 10−4. The results show that the level of the macro-strain in the crystal bulk is independent of the deuteration level. However, when the deuteration level is below 50%, the average of micro-strain increases first with the increasing of deuteration level, then decreases when the deuteration level is in excess of 50%. According to the residual strains, the internal stresses are calculated through σij = Cijklεkl. Finally, the potential sources of the stresses in crystals are discussed and analyzed.

KW - DKDP crystal

KW - KHPO

KW - deuterium-doped KDP

KW - neutron diffraction

KW - residual strain

UR - https://www.scopus.com/pages/publications/85070668740

U2 - 10.1002/crat.201900022

DO - 10.1002/crat.201900022

M3 - Article

AN - SCOPUS:85070668740

SN - 0232-1300

VL - 54

JO - Crystal Research and Technology

JF - Crystal Research and Technology

IS - 9

M1 - 1900022

ER -

3D Residual Strain in DKDP Crystals by Neutron Diffraction

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