Measurement and Analysis of Hydrogen Distribution in Stress Environment Using Vickers Microhardness Technique
In this paper, the stress distribution field in front of the crack tip was obtained by loading a modified WOL specimen using a bolt. Considering the relationship between microhardness and hydrogen content or internal stress in the metal, a model based on the change of microhardness increment is prop...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2018-01-01
|
| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/7857932 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832556456746942464 |
|---|---|
| author | Lei Gu Jing Wang Xiaoyang Li Yanjun Zeng |
| author_facet | Lei Gu Jing Wang Xiaoyang Li Yanjun Zeng |
| author_sort | Lei Gu |
| collection | DOAJ |
| description | In this paper, the stress distribution field in front of the crack tip was obtained by loading a modified WOL specimen using a bolt. Considering the relationship between microhardness and hydrogen content or internal stress in the metal, a model based on the change of microhardness increment is proposed to describe the trend of hydrogen concentration distribution in the stress environment. The agreement between theoretical model and experimental results is verified by the Vickers microhardness tester. Based on the model, there is a simple additive relationship between the hydrogen-induced microhardness increment and the stress-induced microhardness increment. Therefore, the microhardness tester can be employed to evaluate the hydrogen distribution in metals quantitatively. The experimental results demonstrated that the Vickers microhardness method has accurately revealed the hydrogen concentration behavior accurately in a known equibiaxial stress environment. The hydrogen distribution of specimens in the stress environment was analyzed by taking the change of the microhardness increment along the crack propagation direction of specimens as the indicator. |
| format | Article |
| id | doaj-art-2bfdbb5505f54a209f5e124441873475 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-2bfdbb5505f54a209f5e1244418734752025-02-03T05:45:24ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422018-01-01201810.1155/2018/78579327857932Measurement and Analysis of Hydrogen Distribution in Stress Environment Using Vickers Microhardness TechniqueLei Gu0Jing Wang1Xiaoyang Li2Yanjun Zeng3Department of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100124, ChinaDepartment of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100124, ChinaDepartment of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100124, ChinaBiomechanics and Medical Information Institute, Beijing University of Technology, Beijing 100022, ChinaIn this paper, the stress distribution field in front of the crack tip was obtained by loading a modified WOL specimen using a bolt. Considering the relationship between microhardness and hydrogen content or internal stress in the metal, a model based on the change of microhardness increment is proposed to describe the trend of hydrogen concentration distribution in the stress environment. The agreement between theoretical model and experimental results is verified by the Vickers microhardness tester. Based on the model, there is a simple additive relationship between the hydrogen-induced microhardness increment and the stress-induced microhardness increment. Therefore, the microhardness tester can be employed to evaluate the hydrogen distribution in metals quantitatively. The experimental results demonstrated that the Vickers microhardness method has accurately revealed the hydrogen concentration behavior accurately in a known equibiaxial stress environment. The hydrogen distribution of specimens in the stress environment was analyzed by taking the change of the microhardness increment along the crack propagation direction of specimens as the indicator.http://dx.doi.org/10.1155/2018/7857932 |
| spellingShingle | Lei Gu Jing Wang Xiaoyang Li Yanjun Zeng Measurement and Analysis of Hydrogen Distribution in Stress Environment Using Vickers Microhardness Technique Advances in Materials Science and Engineering |
| title | Measurement and Analysis of Hydrogen Distribution in Stress Environment Using Vickers Microhardness Technique |
| title_full | Measurement and Analysis of Hydrogen Distribution in Stress Environment Using Vickers Microhardness Technique |
| title_fullStr | Measurement and Analysis of Hydrogen Distribution in Stress Environment Using Vickers Microhardness Technique |
| title_full_unstemmed | Measurement and Analysis of Hydrogen Distribution in Stress Environment Using Vickers Microhardness Technique |
| title_short | Measurement and Analysis of Hydrogen Distribution in Stress Environment Using Vickers Microhardness Technique |
| title_sort | measurement and analysis of hydrogen distribution in stress environment using vickers microhardness technique |
| url | http://dx.doi.org/10.1155/2018/7857932 |
| work_keys_str_mv | AT leigu measurementandanalysisofhydrogendistributioninstressenvironmentusingvickersmicrohardnesstechnique AT jingwang measurementandanalysisofhydrogendistributioninstressenvironmentusingvickersmicrohardnesstechnique AT xiaoyangli measurementandanalysisofhydrogendistributioninstressenvironmentusingvickersmicrohardnesstechnique AT yanjunzeng measurementandanalysisofhydrogendistributioninstressenvironmentusingvickersmicrohardnesstechnique |