In-Situ Observation of Lüders Band Formation in Hot-Rolled Steel via Digital Image Correlation
Although the Lüders yield phenomenon has been investigated for more than 150 years, some understanding of Lüders band formation lack substantial support from experimental evidence. In-situ observation of Lüders band formation in hot-rolled steel experimentally clarified the following facts: (i) When...
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doaj-b25595ee3e4c4bb6805f8b5c45e013992020-11-25T01:43:19ZengMDPI AGMetals2075-47012020-04-011053053010.3390/met10040530In-Situ Observation of Lüders Band Formation in Hot-Rolled Steel via Digital Image CorrelationHai Qiu0Tadanobu Inoue1Rintaro Ueji2Research Center for Structural Materials, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, JapanResearch Center for Structural Materials, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, JapanResearch Center for Structural Materials, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, JapanAlthough the Lüders yield phenomenon has been investigated for more than 150 years, some understanding of Lüders band formation lack substantial support from experimental evidence. In-situ observation of Lüders band formation in hot-rolled steel experimentally clarified the following facts: (i) When stress reaches the true upper yield stress, the Lüders band begins to nucleate. True upper yield stress is greater than nominal upper yield stress. (ii) Gross stress concentration promotes the Lüders band formation, and the size of the gross stress concentration region determines the initial width of the Lüders band. (iii) The Lüders band nucleates far ahead of the gross yield point.https://www.mdpi.com/2075-4701/10/4/530Lüders bandLüders strainpolycrystalline steeltensile testdigital image correlation |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Hai Qiu Tadanobu Inoue Rintaro Ueji |
spellingShingle |
Hai Qiu Tadanobu Inoue Rintaro Ueji In-Situ Observation of Lüders Band Formation in Hot-Rolled Steel via Digital Image Correlation Metals Lüders band Lüders strain polycrystalline steel tensile test digital image correlation |
author_facet |
Hai Qiu Tadanobu Inoue Rintaro Ueji |
author_sort |
Hai Qiu |
title |
In-Situ Observation of Lüders Band Formation in Hot-Rolled Steel via Digital Image Correlation |
title_short |
In-Situ Observation of Lüders Band Formation in Hot-Rolled Steel via Digital Image Correlation |
title_full |
In-Situ Observation of Lüders Band Formation in Hot-Rolled Steel via Digital Image Correlation |
title_fullStr |
In-Situ Observation of Lüders Band Formation in Hot-Rolled Steel via Digital Image Correlation |
title_full_unstemmed |
In-Situ Observation of Lüders Band Formation in Hot-Rolled Steel via Digital Image Correlation |
title_sort |
in-situ observation of lüders band formation in hot-rolled steel via digital image correlation |
publisher |
MDPI AG |
series |
Metals |
issn |
2075-4701 |
publishDate |
2020-04-01 |
description |
Although the Lüders yield phenomenon has been investigated for more than 150 years, some understanding of Lüders band formation lack substantial support from experimental evidence. In-situ observation of Lüders band formation in hot-rolled steel experimentally clarified the following facts: (i) When stress reaches the true upper yield stress, the Lüders band begins to nucleate. True upper yield stress is greater than nominal upper yield stress. (ii) Gross stress concentration promotes the Lüders band formation, and the size of the gross stress concentration region determines the initial width of the Lüders band. (iii) The Lüders band nucleates far ahead of the gross yield point. |
topic |
Lüders band Lüders strain polycrystalline steel tensile test digital image correlation |
url |
https://www.mdpi.com/2075-4701/10/4/530 |
work_keys_str_mv |
AT haiqiu insituobservationofludersbandformationinhotrolledsteelviadigitalimagecorrelation AT tadanobuinoue insituobservationofludersbandformationinhotrolledsteelviadigitalimagecorrelation AT rintaroueji insituobservationofludersbandformationinhotrolledsteelviadigitalimagecorrelation |
_version_ |
1725032118618161152 |