Article(id=1241837069199283097, tenantId=1146029695717560320, journalId=1241755870837649424, issueId=1241837062781997926, articleNumber=null, orderNo=null, doi=10.19636/j.cnki.cjsm42-1250/o3.2025.012, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1746547200000, receivedDateStr=2025-05-07, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1774006629514, onlineDateStr=2026-03-20, pubDate=1750867200000, pubDateStr=2025-06-26, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1774006629514, onlineIssueDateStr=2026-03-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1774006629514, creator=13701087609, updateTime=1774006629514, updator=13701087609, issue=Issue{id=1241837062781997926, tenantId=1146029695717560320, journalId=1241755870837649424, year='2025', volume='46', issue='3', pageStart='297', pageEnd='436', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1774006627984, creator=13701087609, updateTime=1774006677005, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1241837268458083311, tenantId=1146029695717560320, journalId=1241755870837649424, issueId=1241837062781997926, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1241837268462277616, tenantId=1146029695717560320, journalId=1241755870837649424, issueId=1241837062781997926, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=423, endPage=436, ext={EN=ArticleExt(id=1241837069484495777, articleId=1241837069199283097, tenantId=1146029695717560320, journalId=1241755870837649424, language=EN, title=Interaction Between Dislocations and Cracks in Body-Centered Crystals Exposed to Hydrogen, columnId=1241831201674171363, journalTitle=Chinese Journal of Solid Mechanics, columnName=Research Papers, runingTitle=null, highlight=null, articleAbstract=
To investigate how hydrogen atoms affect the fracture of metallic materials at the microscopic level, this paper develops a model of crack-dislocation interaction incorporating hydrogen infiltration at the crack tip across multiple grains, based on discrete dislocation theory. The model examines how hydrogen alters dislocation distribution on slip planes within grains, affects dislocation penetration through grain boundaries, and initiates wedge cracks at these boundaries. It applies to both body-centered cubic (BCC) and face-centered cubic (FCC) crystals. Through calculations, theimpact of varying hydrogen concentrations and infiltration ranges at the crack tip on dislocation distribution in front of the crack is analyzed. Results show that hydrogen at the crack tip promotes dislocation emission, increases the driving force for dislocation movement on slip planes, and facilitates dislocation penetration through grain boundaries. The relationship between wedge crack initiation at grain boundaries and hydrogen presence at the crack tip is explored. It is found that at large grain boundary angles, an increase in the hydrogen concentration and infiltration range at the crack tip makes it easier for wedge cracks to initiate at grain boundaries. Additionally, the model assesses how hydrogen infiltration at the crack tip influences shear stress in the dislocation-free zone in front of the main crack. It reveals that increased hydrogen concentration and infiltration range at the crack tip enlarge the dislocation-free zone in front of the crack, reducing the shielding effect of dislocations and facilitating crack propagation. This model effectively demonstratesthe influence of hydrogen atoms at crack tips on dislocations in crystals, providing a foundation for studying metal fracture in hydrogen environments.
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基于离散位错理论,建立了裂纹尖端渗入氢原子影响下的裂纹与位错相互作用模型,并在此模型的基础上考虑了氢原子对位错穿晶、晶界裂纹萌生以及主裂纹产生的影响. 通过计算,分析了不同裂纹尖端渗氢浓度与范围对裂纹前方位错分布产生的影响,给出了晶界裂纹萌生与裂纹尖端氢原子的关系,分析了主裂纹前方无位错区内切应力受裂纹尖端渗氢的影响.
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Schematic diagram of discretization of hydrogen permeation concentration in the material, figureFileSmall=6qFB9FNAuD5ma3PIEdQlvA==, figureFileBig=2ULxPz0P48XbhdTCw0zAYA==, tableContent=null), ArticleFig(id=1241837091735278041, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241837069199283097, language=CN, label=图1, caption=
材料内渗氢浓度离散化示意图, figureFileSmall=6qFB9FNAuD5ma3PIEdQlvA==, figureFileBig=2ULxPz0P48XbhdTCw0zAYA==, tableContent=null), ArticleFig(id=1241837091986936295, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241837069199283097, language=EN, label=Fig.2, caption=
Schematic diagram of hydrogen permeation and dislocation emission at the crack tip of metal crystal, figureFileSmall=Wyoi2+DoPKZ7/R0E4OMKKA==, figureFileBig=fAEot7BNI8Kz1L/PZlsVnQ==, tableContent=null), ArticleFig(id=1241837092070822380, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241837069199283097, language=CN, label=图2, caption=
金属晶体材料裂纹尖端渗氢与位错发射示意图, figureFileSmall=Wyoi2+DoPKZ7/R0E4OMKKA==, figureFileBig=fAEot7BNI8Kz1L/PZlsVnQ==, tableContent=null), ArticleFig(id=1241837092175679985, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241837069199283097, language=EN, label=Fig.3, caption=
Schematic diagram of wedge crack initiation in grain boundaries, figureFileSmall=/jY5ww81GetdeUFbILe8SA==, figureFileBig=gLP92NfvjYZtYqtOmMraUA==, tableContent=null), ArticleFig(id=1241837092276343288, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241837069199283097, language=CN, label=图3, caption=
晶界内楔形裂纹成核示意图, figureFileSmall=/jY5ww81GetdeUFbILe8SA==, figureFileBig=gLP92NfvjYZtYqtOmMraUA==, tableContent=null), ArticleFig(id=1241837092377006587, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241837069199283097, language=EN, label=Fig.4, caption=
The relationship between the distance d from the crack tip to the grain boundary and the number of dislocations n in nanocrystals (a) Ni and (b) Cu, figureFileSmall=YczqFmKnROLP5r1c1evnKA==, figureFileBig=yUVmHPMJ9ysIuO29s4S8qg==, tableContent=null), ArticleFig(id=1241837092473475584, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241837069199283097, language=CN, label=图4, caption=
纳米晶(a)Ni与(b)Cu中裂纹尖端至晶界距离d与位错数量n的关系, figureFileSmall=YczqFmKnROLP5r1c1evnKA==, figureFileBig=yUVmHPMJ9ysIuO29s4S8qg==, tableContent=null), ArticleFig(id=1241837092586721795, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241837069199283097, language=EN, label=Fig.5, caption=
The influence of different hydrogen permeation concentrations CA at the crack tip on the distribution of dislocations (d=5 μm), figureFileSmall=GwjIGyEdImcI4nstLY3uUQ==, figureFileBig=Qus2YNAT4hy0w9pmivhA1Q==, tableContent=null), ArticleFig(id=1241837092683190789, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241837069199283097, language=CN, label=图5, caption=
裂纹尖端不同渗氢浓度CA对位错分布的影响(d=5 μm), figureFileSmall=GwjIGyEdImcI4nstLY3uUQ==, figureFileBig=Qus2YNAT4hy0w9pmivhA1Q==, tableContent=null), ArticleFig(id=1241837094230888969, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241837069199283097, language=EN, label=Fig.6, caption=
The influence of different hydrogen permeation ranges h at the crack tip on the distribution of dislocations (d=5 μm), figureFileSmall=ZwD2Mnqjs3DnCpaDQfYg0Q==, figureFileBig=yXhhy8Ul5e4J6ZzHBoP8Bg==, tableContent=null), ArticleFig(id=1241837094323163661, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241837069199283097, language=CN, label=图6, caption=
裂纹尖端不同渗氢范围h对位错分布的影响(d=5 μm), figureFileSmall=ZwD2Mnqjs3DnCpaDQfYg0Q==, figureFileBig=yXhhy8Ul5e4J6ZzHBoP8Bg==, tableContent=null), ArticleFig(id=1241837094444798480, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241837069199283097, language=EN, label=Fig.7, caption=
The initiation energy of wedge cracks at grain boundaries, figureFileSmall=GwScGuuTN019aduziWN7Mg==, figureFileBig=bp/ayQqsb43nlXSgiOVADg==, tableContent=null), ArticleFig(id=1241837094541267475, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241837069199283097, language=CN, label=图7, caption=
晶界处楔形裂纹萌生能量, figureFileSmall=GwScGuuTN019aduziWN7Mg==, figureFileBig=bp/ayQqsb43nlXSgiOVADg==, tableContent=null), ArticleFig(id=1241837094620959254, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241837069199283097, language=EN, label=Fig.8, caption=
Changes in elastic properties at grain boundaries under the influence of hydrogen permeation range h and concentration CA at the crack tip when the grain boundary angle is 5° (d=5 μm), figureFileSmall=hEA3BhH+zp97AKb9EpSN7w==, figureFileBig=89mgG/c3MR7JmbjxMVCiVw==, tableContent=null), ArticleFig(id=1241837094713233943, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241837069199283097, language=CN, label=图8, caption=
晶界倾斜角为5°时裂纹尖端渗氢范围h和浓度CA影响下晶界处弹性能变化(d=5 μm), figureFileSmall=hEA3BhH+zp97AKb9EpSN7w==, figureFileBig=89mgG/c3MR7JmbjxMVCiVw==, tableContent=null), ArticleFig(id=1241837094792925721, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241837069199283097, language=EN, label=Fig.9, caption=
Changes in elastic properties at grain boundaries under the influence of hydrogen permeation range h and concentration CA at the crack tip when the grain boundary angle is 5° (d=5 μm), figureFileSmall=l70fp5ARXjwtNDfqhv8kDQ==, figureFileBig=gaMoiZAE0Kn1Tcsyans86g==, tableContent=null), ArticleFig(id=1241837094922949149, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241837069199283097, language=CN, label=图9, caption=
晶界倾斜角为7°时裂纹尖端渗氢范围h和浓度CA影响下晶界处弹性能变化(d=5 μm), figureFileSmall=l70fp5ARXjwtNDfqhv8kDQ==, figureFileBig=gaMoiZAE0Kn1Tcsyans86g==, tableContent=null), ArticleFig(id=1241837095027806753, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241837069199283097, language=EN, label=Fig.10, caption=
Changes in elastic properties at grain boundaries under the influence of hydrogen permeation range h and concentration CA at the crack tip when the grain boundary angle is 5° (d=5 μm), figureFileSmall=y2LXzPwC5par5n++VkXVaQ==, figureFileBig=b3gCGkSw8LHvOnEfVXHeKg==, tableContent=null), ArticleFig(id=1241837095120081444, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241837069199283097, language=CN, label=图10, caption=
晶界倾斜角为9°时裂纹尖端渗氢范围h和浓度CA影响下晶界处弹性能变化(d=5 μm), figureFileSmall=y2LXzPwC5par5n++VkXVaQ==, figureFileBig=b3gCGkSw8LHvOnEfVXHeKg==, tableContent=null), ArticleFig(id=1241837095208161832, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241837069199283097, language=EN, label=Fig.11, caption=
The relationship between the shear stress τ at the crack tip and the hydrogen permeation concentration under different grain boundary angles, figureFileSmall=/qPorLn3aS7BmEbktoAlVg==, figureFileBig=L0CuoVy2KZaRjMMrlO5opg==, tableContent=null), ArticleFig(id=1241837095275270698, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241837069199283097, language=CN, label=图11, caption=
不同晶界倾斜角下裂纹尖端剪应力τ与渗氢浓度CA之间的关系, figureFileSmall=/qPorLn3aS7BmEbktoAlVg==, figureFileBig=L0CuoVy2KZaRjMMrlO5opg==, tableContent=null), ArticleFig(id=1241837095388516912, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241837069199283097, language=EN, label=Fig.12, caption=
The relationship between the shear stress τ at the crack tip and the hydrogen permeation concentration under different grain boundary angles, figureFileSmall=W3z8JYCqqkU0QXi/Pe0Pkw==, figureFileBig=58FlyS3aDQTu2TnGM6P1Fw==, tableContent=null), ArticleFig(id=1241837095484985907, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241837069199283097, language=CN, label=图12, caption=
不同晶界倾斜角下裂纹尖端剪应力τ与渗氢范围h之间的关系, figureFileSmall=W3z8JYCqqkU0QXi/Pe0Pkw==, figureFileBig=58FlyS3aDQTu2TnGM6P1Fw==, tableContent=null)], attaches=null, journal=Journal(id=1241752460218384393, delFlag=0, nameCn=固体力学学报, nameEn=Chinese Journal of Solid Mechanics, nameHistory1=null, nameHistory2=null, issn=0254-7805, eissn=null, cn=42-1250/O3, coden=null, periodic=1, language=CN, oaType=null, ccby=null, superviseOffice=null, ownerOffice=null, pubOffice=null, editorOffice=null, officeType=null, aims=null, clcCode=null, officeProv=null, officeCity=null, officeAddr=null, officeZip=null, officeEmail=null, officePhone=null, editDirector=null, officeDirector=null, officeDirectorPhone=null, officeStaffNum=null, officeEmpNum=null, coverPicUrl=QijUwme6mcFRwEfHnJkyaw==, journalPrice=null, startedYear=null, abbrevIsoEn=Chinese Journal of Solid Mechanics, journalRemark=null, publicationField=null, createdTime=1773986457163, updatedTime=1773987385031, createdBy=18614031015, updatedBy=13701087609, 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