The dynamic deformation and shear localization in Mg-10 wt % Ca alloy
The deformation behavior and mechanical properties of Mg-10 wt % Ca alloy have been investigated under both quasi-static and dynamic loading conditions. The dynamic tests are conducted using the classical Split Hopkinson Pressure Bar (SHPB) at high strain rates of ∼103 s−1. It consists of primary (M...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-05-01
|
| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425010683 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849723230105894912 |
|---|---|
| author | Na Yan Congshan Zhao Jianye He Zezhou Li Chunhuan Guo |
| author_facet | Na Yan Congshan Zhao Jianye He Zezhou Li Chunhuan Guo |
| author_sort | Na Yan |
| collection | DOAJ |
| description | The deformation behavior and mechanical properties of Mg-10 wt % Ca alloy have been investigated under both quasi-static and dynamic loading conditions. The dynamic tests are conducted using the classical Split Hopkinson Pressure Bar (SHPB) at high strain rates of ∼103 s−1. It consists of primary (Mg) phase and (Mg) + Mg2Ca eutectic phases. Mechanical properties show that both the flow stress and strain rate sensitivity are improved, compared with pure Mg and some classical magnesium alloys. The deformation mechanisms differ under quasi-static and dynamic compression conditions. Under quasi-static strain rates, the primary deformation mechanism is dislocation motion. Simultaneously, dissociation of basal <a> dislocation into two Shockley partial dislocations causes SFs and the {0001} <10-10> basal slip system is activated. However, at higher strain rates, the deformation mechanism is predominantly assisted by mechanical twins (MTs). Especially, the {10–11} MTs are activated in the Mg2Ca phases. Basal SFs contiguous to {10–11} twins are also observed. Additionally, adiabatic shear band (ASB) forms under dynamic loading conditions, suppressing the instant brittle failure. |
| format | Article |
| id | doaj-art-2dde56cd396742ae804ad59e52663d12 |
| institution | DOAJ |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-2dde56cd396742ae804ad59e52663d122025-08-20T03:11:06ZengElsevierJournal of Materials Research and Technology2238-78542025-05-01367008701510.1016/j.jmrt.2025.04.247The dynamic deformation and shear localization in Mg-10 wt % Ca alloyNa Yan0Congshan Zhao1Jianye He2Zezhou Li3Chunhuan Guo4School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China; Corresponding author.School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, ChinaSchool of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, ChinaSchool of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China; Corresponding author.Key Laboratory of Superlight Materials & Surface Technology of Ministry of Education, Harbin Engineering University, Harbin, 150001, ChinaThe deformation behavior and mechanical properties of Mg-10 wt % Ca alloy have been investigated under both quasi-static and dynamic loading conditions. The dynamic tests are conducted using the classical Split Hopkinson Pressure Bar (SHPB) at high strain rates of ∼103 s−1. It consists of primary (Mg) phase and (Mg) + Mg2Ca eutectic phases. Mechanical properties show that both the flow stress and strain rate sensitivity are improved, compared with pure Mg and some classical magnesium alloys. The deformation mechanisms differ under quasi-static and dynamic compression conditions. Under quasi-static strain rates, the primary deformation mechanism is dislocation motion. Simultaneously, dissociation of basal <a> dislocation into two Shockley partial dislocations causes SFs and the {0001} <10-10> basal slip system is activated. However, at higher strain rates, the deformation mechanism is predominantly assisted by mechanical twins (MTs). Especially, the {10–11} MTs are activated in the Mg2Ca phases. Basal SFs contiguous to {10–11} twins are also observed. Additionally, adiabatic shear band (ASB) forms under dynamic loading conditions, suppressing the instant brittle failure.http://www.sciencedirect.com/science/article/pii/S2238785425010683Magnesium alloyDeformation behaviorAdiabatic shear localization |
| spellingShingle | Na Yan Congshan Zhao Jianye He Zezhou Li Chunhuan Guo The dynamic deformation and shear localization in Mg-10 wt % Ca alloy Journal of Materials Research and Technology Magnesium alloy Deformation behavior Adiabatic shear localization |
| title | The dynamic deformation and shear localization in Mg-10 wt % Ca alloy |
| title_full | The dynamic deformation and shear localization in Mg-10 wt % Ca alloy |
| title_fullStr | The dynamic deformation and shear localization in Mg-10 wt % Ca alloy |
| title_full_unstemmed | The dynamic deformation and shear localization in Mg-10 wt % Ca alloy |
| title_short | The dynamic deformation and shear localization in Mg-10 wt % Ca alloy |
| title_sort | dynamic deformation and shear localization in mg 10 wt ca alloy |
| topic | Magnesium alloy Deformation behavior Adiabatic shear localization |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425010683 |
| work_keys_str_mv | AT nayan thedynamicdeformationandshearlocalizationinmg10wtcaalloy AT congshanzhao thedynamicdeformationandshearlocalizationinmg10wtcaalloy AT jianyehe thedynamicdeformationandshearlocalizationinmg10wtcaalloy AT zezhouli thedynamicdeformationandshearlocalizationinmg10wtcaalloy AT chunhuanguo thedynamicdeformationandshearlocalizationinmg10wtcaalloy AT nayan dynamicdeformationandshearlocalizationinmg10wtcaalloy AT congshanzhao dynamicdeformationandshearlocalizationinmg10wtcaalloy AT jianyehe dynamicdeformationandshearlocalizationinmg10wtcaalloy AT zezhouli dynamicdeformationandshearlocalizationinmg10wtcaalloy AT chunhuanguo dynamicdeformationandshearlocalizationinmg10wtcaalloy |