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f | 1 | { | f | 1 | { |
2 | "author": "Kang, S. J.", | 2 | "author": "Kang, S. J.", | ||
3 | "author_email": "", | 3 | "author_email": "", | ||
4 | "creator_user_id": "17755db4-395a-4b3b-ac09-e8e3484ca700", | 4 | "creator_user_id": "17755db4-395a-4b3b-ac09-e8e3484ca700", | ||
5 | "doi": "10.35097/1605", | 5 | "doi": "10.35097/1605", | ||
6 | "doi_date_published": "2023", | 6 | "doi_date_published": "2023", | ||
7 | "doi_publisher": "", | 7 | "doi_publisher": "", | ||
8 | "doi_status": "True", | 8 | "doi_status": "True", | ||
9 | "extra_authors": [ | 9 | "extra_authors": [ | ||
10 | { | 10 | { | ||
11 | "extra_author": "Wang, D.", | 11 | "extra_author": "Wang, D.", | ||
12 | "orcid": "" | 12 | "orcid": "" | ||
13 | }, | 13 | }, | ||
14 | { | 14 | { | ||
15 | "extra_author": "Caron, A.", | 15 | "extra_author": "Caron, A.", | ||
16 | "orcid": "" | 16 | "orcid": "" | ||
17 | }, | 17 | }, | ||
18 | { | 18 | { | ||
19 | "extra_author": "Minnert, C.", | 19 | "extra_author": "Minnert, C.", | ||
20 | "orcid": "" | 20 | "orcid": "" | ||
21 | }, | 21 | }, | ||
22 | { | 22 | { | ||
23 | "extra_author": "Durst, K.", | 23 | "extra_author": "Durst, K.", | ||
24 | "orcid": "" | 24 | "orcid": "" | ||
25 | }, | 25 | }, | ||
26 | { | 26 | { | ||
27 | "extra_author": "K\u00fcbel, C.", | 27 | "extra_author": "K\u00fcbel, C.", | ||
28 | "orcid": "" | 28 | "orcid": "" | ||
29 | }, | 29 | }, | ||
30 | { | 30 | { | ||
31 | "extra_author": "Mu, X.", | 31 | "extra_author": "Mu, X.", | ||
32 | "orcid": "" | 32 | "orcid": "" | ||
33 | } | 33 | } | ||
34 | ], | 34 | ], | ||
35 | "groups": [], | 35 | "groups": [], | ||
36 | "id": "17fa338a-81fa-4c69-bd53-0b2159a01dca", | 36 | "id": "17fa338a-81fa-4c69-bd53-0b2159a01dca", | ||
37 | "isopen": false, | 37 | "isopen": false, | ||
38 | "license_id": "CC BY 4.0 Attribution", | 38 | "license_id": "CC BY 4.0 Attribution", | ||
39 | "license_title": "CC BY 4.0 Attribution", | 39 | "license_title": "CC BY 4.0 Attribution", | ||
40 | "metadata_created": "2023-08-04T08:51:05.214142", | 40 | "metadata_created": "2023-08-04T08:51:05.214142", | ||
t | 41 | "metadata_modified": "2023-08-04T08:52:11.599416", | t | 41 | "metadata_modified": "2023-08-04T08:53:45.501168", |
42 | "name": "rdr-doi-10-35097-1605", | 42 | "name": "rdr-doi-10-35097-1605", | ||
43 | "notes": "Abstract: For decades, scanning/transmission electron | 43 | "notes": "Abstract: For decades, scanning/transmission electron | ||
44 | microscopy (S/TEM) techniques have been employed to analyze shear | 44 | microscopy (S/TEM) techniques have been employed to analyze shear | ||
45 | bands in metallic glasses and understand their formation in order to | 45 | bands in metallic glasses and understand their formation in order to | ||
46 | improve the mechanical properties of metallic glasses. However, due to | 46 | improve the mechanical properties of metallic glasses. However, due to | ||
47 | a lack of direct information in reciprocal space, conventional S/TEM | 47 | a lack of direct information in reciprocal space, conventional S/TEM | ||
48 | cannot characterize the local strain and atomic structure of amorphous | 48 | cannot characterize the local strain and atomic structure of amorphous | ||
49 | materials, which are key to describe the deformation of glasses. For | 49 | materials, which are key to describe the deformation of glasses. For | ||
50 | this work, we applied 4-dimensional STEM to map and directly correlate | 50 | this work, we applied 4-dimensional STEM to map and directly correlate | ||
51 | the local strain and the atomic structure at the nanometer scale in | 51 | the local strain and the atomic structure at the nanometer scale in | ||
52 | deformed metallic glasses. We observe residual strain fields with | 52 | deformed metallic glasses. We observe residual strain fields with | ||
53 | quadrupolar symmetry concentrated at dilated Eshelby inclusions. The | 53 | quadrupolar symmetry concentrated at dilated Eshelby inclusions. The | ||
54 | strain fields percolate in a vortex-like manner building up the shear | 54 | strain fields percolate in a vortex-like manner building up the shear | ||
55 | band. This provides a new understanding of the formation of shear | 55 | band. This provides a new understanding of the formation of shear | ||
56 | bands in metallic glass.\r\nTechnicalRemarks: The data format is DM4 | 56 | bands in metallic glass.\r\nTechnicalRemarks: The data format is DM4 | ||
57 | (Gatan Microscopy Suite Software) and processed by lab-written Matlab | 57 | (Gatan Microscopy Suite Software) and processed by lab-written Matlab | ||
58 | code. 4D-STEM measurements were conducted using a Themis Z | 58 | code. 4D-STEM measurements were conducted using a Themis Z | ||
59 | double-corrected TEM (Thermofisher Scientific) operated at 300 kV in | 59 | double-corrected TEM (Thermofisher Scientific) operated at 300 kV in | ||
60 | microprobe STEM mode with spot size 6 and a semi-convergence angle of | 60 | microprobe STEM mode with spot size 6 and a semi-convergence angle of | ||
61 | 0.26 mrad giving rise to a diffraction-limited probe size of ~5 nm. | 61 | 0.26 mrad giving rise to a diffraction-limited probe size of ~5 nm. | ||
62 | 4D-STEM records local 2D diffraction patterns over a 2D array of probe | 62 | 4D-STEM records local 2D diffraction patterns over a 2D array of probe | ||
63 | positions by stepwise scanning of the probe. The method is called | 63 | positions by stepwise scanning of the probe. The method is called | ||
64 | 4D-STEM referring to its typical 4D dataset (2D diffraction pattern on | 64 | 4D-STEM referring to its typical 4D dataset (2D diffraction pattern on | ||
65 | a 2D array of the sample). We used a OneView camera (Gatan Inc.) with | 65 | a 2D array of the sample). We used a OneView camera (Gatan Inc.) with | ||
66 | a camera length of 1.15 m to record the diffraction patterns. This | 66 | a camera length of 1.15 m to record the diffraction patterns. This | ||
67 | camera length was chosen to capture the first diffuse diffraction ring | 67 | camera length was chosen to capture the first diffuse diffraction ring | ||
68 | with a sufficient diameter on the camera to enhance the sensitivity | 68 | with a sufficient diameter on the camera to enhance the sensitivity | ||
69 | for measuring distortions. The 2nd diffuse diffraction ring was also | 69 | for measuring distortions. The 2nd diffuse diffraction ring was also | ||
70 | included. This preserves the capability for PDF analysis. 4D-STEM maps | 70 | included. This preserves the capability for PDF analysis. 4D-STEM maps | ||
71 | were acquired with a step size of 5.8 nm and a frame size of | 71 | were acquired with a step size of 5.8 nm and a frame size of | ||
72 | 900\u00d7500 pixels for the Fe85.2Si0.5B9.5P4Cu0.8 metallic glass | 72 | 900\u00d7500 pixels for the Fe85.2Si0.5B9.5P4Cu0.8 metallic glass | ||
73 | ribbon and a step size of 9.7 nm and a frame size of 350\u00d7270 | 73 | ribbon and a step size of 9.7 nm and a frame size of 350\u00d7270 | ||
74 | pixels for the Zr46Cu38Al8Ag8 bulk metallic glass with an exposure | 74 | pixels for the Zr46Cu38Al8Ag8 bulk metallic glass with an exposure | ||
75 | time of 3.3 ms per frame (frame rate of ~300 f/s). \r\nThe diffraction | 75 | time of 3.3 ms per frame (frame rate of ~300 f/s). \r\nThe diffraction | ||
76 | pattern of a typical amorphous material shows a diffuse ring pattern | 76 | pattern of a typical amorphous material shows a diffuse ring pattern | ||
77 | (Figure 1a). As described in previous works [23-24, 27], the local | 77 | (Figure 1a). As described in previous works [23-24, 27], the local | ||
78 | stress in the metallic glass induces a structural anisotropy, which | 78 | stress in the metallic glass induces a structural anisotropy, which | ||
79 | results in an elliptic distortion of the diffraction ring leading to a | 79 | results in an elliptic distortion of the diffraction ring leading to a | ||
80 | deviation from the ideal circle as illustrated in Figure 1b (the | 80 | deviation from the ideal circle as illustrated in Figure 1b (the | ||
81 | diffraction pattern was artificially elongated for easy presentation). | 81 | diffraction pattern was artificially elongated for easy presentation). | ||
82 | Therefore, the strain can be mapped by determining the ellipticity of | 82 | Therefore, the strain can be mapped by determining the ellipticity of | ||
83 | the diffraction ring in each local diffraction pattern of the 4D-STEM | 83 | the diffraction ring in each local diffraction pattern of the 4D-STEM | ||
84 | dataset. Different from high-resolution (HR)TEM-based strain mapping | 84 | dataset. Different from high-resolution (HR)TEM-based strain mapping | ||
85 | methods such as geometric phase analysis (GPA), which analyzes real | 85 | methods such as geometric phase analysis (GPA), which analyzes real | ||
86 | space atomic lattice displacements [49], the strain measurement used | 86 | space atomic lattice displacements [49], the strain measurement used | ||
87 | here analyzes the diffraction ring in the 4D-STEM data. It thus | 87 | here analyzes the diffraction ring in the 4D-STEM data. It thus | ||
88 | enables the capability to measure strain for amorphous materials and a | 88 | enables the capability to measure strain for amorphous materials and a | ||
89 | large field of view (up to micrometers).", | 89 | large field of view (up to micrometers).", | ||
90 | "num_resources": 0, | 90 | "num_resources": 0, | ||
91 | "num_tags": 5, | 91 | "num_tags": 5, | ||
92 | "orcid": "0000-0002-5096-5965", | 92 | "orcid": "0000-0002-5096-5965", | ||
93 | "organization": { | 93 | "organization": { | ||
94 | "approval_status": "approved", | 94 | "approval_status": "approved", | ||
95 | "created": "2023-01-12T13:30:23.238233", | 95 | "created": "2023-01-12T13:30:23.238233", | ||
96 | "description": "RADAR (Research Data Repository) is a | 96 | "description": "RADAR (Research Data Repository) is a | ||
97 | cross-disciplinary repository for archiving and publishing research | 97 | cross-disciplinary repository for archiving and publishing research | ||
98 | data from completed scientific studies and projects. The focus is on | 98 | data from completed scientific studies and projects. The focus is on | ||
99 | research data from subjects that do not yet have their own | 99 | research data from subjects that do not yet have their own | ||
100 | discipline-specific infrastructures for research data management. ", | 100 | discipline-specific infrastructures for research data management. ", | ||
101 | "id": "013c89a9-383c-4200-8baa-0f78bf1d91f9", | 101 | "id": "013c89a9-383c-4200-8baa-0f78bf1d91f9", | ||
102 | "image_url": "radar-logo.svg", | 102 | "image_url": "radar-logo.svg", | ||
103 | "is_organization": true, | 103 | "is_organization": true, | ||
104 | "name": "radar", | 104 | "name": "radar", | ||
105 | "state": "active", | 105 | "state": "active", | ||
106 | "title": "RADAR", | 106 | "title": "RADAR", | ||
107 | "type": "organization" | 107 | "type": "organization" | ||
108 | }, | 108 | }, | ||
109 | "owner_org": "013c89a9-383c-4200-8baa-0f78bf1d91f9", | 109 | "owner_org": "013c89a9-383c-4200-8baa-0f78bf1d91f9", | ||
110 | "private": false, | 110 | "private": false, | ||
111 | "production_year": "2022", | 111 | "production_year": "2022", | ||
112 | "publication_year": "2023", | 112 | "publication_year": "2023", | ||
113 | "publishers": [ | 113 | "publishers": [ | ||
114 | { | 114 | { | ||
115 | "publisher": "Karlsruhe Institute of Technology" | 115 | "publisher": "Karlsruhe Institute of Technology" | ||
116 | } | 116 | } | ||
117 | ], | 117 | ], | ||
118 | "relationships_as_object": [], | 118 | "relationships_as_object": [], | ||
119 | "relationships_as_subject": [], | 119 | "relationships_as_subject": [], | ||
120 | "repository_name": "RADAR (Research Data Repository)", | 120 | "repository_name": "RADAR (Research Data Repository)", | ||
121 | "resources": [], | 121 | "resources": [], | ||
122 | "services_used_list": "", | 122 | "services_used_list": "", | ||
123 | "source_metadata_created": "2023", | 123 | "source_metadata_created": "2023", | ||
124 | "source_metadata_modified": "", | 124 | "source_metadata_modified": "", | ||
125 | "state": "active", | 125 | "state": "active", | ||
126 | "subject_areas": [ | 126 | "subject_areas": [ | ||
127 | { | 127 | { | ||
128 | "subject_area_additional": "", | 128 | "subject_area_additional": "", | ||
129 | "subject_area_name": "Engineering" | 129 | "subject_area_name": "Engineering" | ||
130 | } | 130 | } | ||
131 | ], | 131 | ], | ||
132 | "tags": [ | 132 | "tags": [ | ||
133 | { | 133 | { | ||
134 | "display_name": "4D-STEM", | 134 | "display_name": "4D-STEM", | ||
135 | "id": "d6824ab1-cd8e-4829-a046-eb12c2aa36cd", | 135 | "id": "d6824ab1-cd8e-4829-a046-eb12c2aa36cd", | ||
136 | "name": "4D-STEM", | 136 | "name": "4D-STEM", | ||
137 | "state": "active", | 137 | "state": "active", | ||
138 | "vocabulary_id": null | 138 | "vocabulary_id": null | ||
139 | }, | 139 | }, | ||
140 | { | 140 | { | ||
141 | "display_name": "Eshelby inclusion", | 141 | "display_name": "Eshelby inclusion", | ||
142 | "id": "6ef00761-3874-48a2-8032-e69497cd193d", | 142 | "id": "6ef00761-3874-48a2-8032-e69497cd193d", | ||
143 | "name": "Eshelby inclusion", | 143 | "name": "Eshelby inclusion", | ||
144 | "state": "active", | 144 | "state": "active", | ||
145 | "vocabulary_id": null | 145 | "vocabulary_id": null | ||
146 | }, | 146 | }, | ||
147 | { | 147 | { | ||
148 | "display_name": "Metallic glass", | 148 | "display_name": "Metallic glass", | ||
149 | "id": "5dadd09b-dd4d-433c-9241-1fc9f42f084a", | 149 | "id": "5dadd09b-dd4d-433c-9241-1fc9f42f084a", | ||
150 | "name": "Metallic glass", | 150 | "name": "Metallic glass", | ||
151 | "state": "active", | 151 | "state": "active", | ||
152 | "vocabulary_id": null | 152 | "vocabulary_id": null | ||
153 | }, | 153 | }, | ||
154 | { | 154 | { | ||
155 | "display_name": "Shear band", | 155 | "display_name": "Shear band", | ||
156 | "id": "39a227cf-2a2e-432e-911e-2249dd469fdc", | 156 | "id": "39a227cf-2a2e-432e-911e-2249dd469fdc", | ||
157 | "name": "Shear band", | 157 | "name": "Shear band", | ||
158 | "state": "active", | 158 | "state": "active", | ||
159 | "vocabulary_id": null | 159 | "vocabulary_id": null | ||
160 | }, | 160 | }, | ||
161 | { | 161 | { | ||
162 | "display_name": "Strain field", | 162 | "display_name": "Strain field", | ||
163 | "id": "d990c682-da6e-4ce9-a52f-208178e943d3", | 163 | "id": "d990c682-da6e-4ce9-a52f-208178e943d3", | ||
164 | "name": "Strain field", | 164 | "name": "Strain field", | ||
165 | "state": "active", | 165 | "state": "active", | ||
166 | "vocabulary_id": null | 166 | "vocabulary_id": null | ||
167 | } | 167 | } | ||
168 | ], | 168 | ], | ||
169 | "title": "Direct observation of quadrupolar strain fields | 169 | "title": "Direct observation of quadrupolar strain fields | ||
170 | surrounding eshelby inclusions in metallic glasses", | 170 | surrounding eshelby inclusions in metallic glasses", | ||
171 | "type": "vdataset", | 171 | "type": "vdataset", | ||
172 | "url": "https://doi.org/10.35097/1605" | 172 | "url": "https://doi.org/10.35097/1605" | ||
173 | } | 173 | } |