Effect of hydrogen-induced solid-state phase transformation on mechanical properties of AlCoCrFeNi2.1 eutectic high entropy alloy
AlCoCrFeNi2.1 eutectic high entropy alloy has excellent mechanical properties and promising applications in fields such as hydrogen storage and transportation. The surface of the alloy is hydrogenated by electrochemical hydrogenation， and tensile tests are carried out on H-charged and H-free specime...
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| Format: | Article |
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Journal of Materials Engineering
2025-02-01
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| Series: | Cailiao gongcheng |
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| Online Access: | https://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2024.000313 |
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| author | ZHENG Wenjian WANG Yu YU Yang FENG Daochen YU Zhen WANG Wenjun YAN Dejun YANG Jianguo |
| author_facet | ZHENG Wenjian WANG Yu YU Yang FENG Daochen YU Zhen WANG Wenjun YAN Dejun YANG Jianguo |
| author_sort | ZHENG Wenjian |
| collection | DOAJ |
| description | AlCoCrFeNi2.1 eutectic high entropy alloy has excellent mechanical properties and promising applications in fields such as hydrogen storage and transportation. The surface of the alloy is hydrogenated by electrochemical hydrogenation， and tensile tests are carried out on H-charged and H-free specimens to compare and analyze the fracture morphology characteristics， and the effect of hydrogen-induced precipitated phase evolution on the mechanical properties of the alloy is studied. The results show that compared with the samples without hydrogen charging， the yield strength of the hydrogen charging solution samples with sulfuric acid concentrations of 0.5 mol/L and 1.0 mol/L decreases by 14.60% and 20.22%， respectively， and the tensile strength decreases by 15.50% and 25.15%， respectively. Additionally， the mechanical properties of the alloy further decrease with the increase of the hydrogen ion concentration in the hydrogen-charged solution， and the fracture region near the surface shows more obvious brittle fracture characteristics. The precipitated phase， which undergoes a phase transition after hydrogen charging， remains on the surface of the BCC phase during fracture to form a higher and denser raised structure， and a structure distinct from the two phases is also found at the phase boundary. The evolution of hydrogen-induced nanoprecipitated phases leads to a decrease in the overall mechanical properties of the alloy. |
| format | Article |
| id | doaj-art-385cd8df2cd342c7b87c6e1531b1fd60 |
| institution | OA Journals |
| issn | 1001-4381 |
| language | zho |
| publishDate | 2025-02-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj-art-385cd8df2cd342c7b87c6e1531b1fd602025-08-20T02:16:44ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43812025-02-0153215215910.11868/j.issn.1001-4381.2024.0003131001-4381（2025）02-0152-08Effect of hydrogen-induced solid-state phase transformation on mechanical properties of AlCoCrFeNi2.1 eutectic high entropy alloyZHENG Wenjian0WANG Yu1YU Yang2FENG Daochen3YU Zhen4WANG Wenjun5YAN Dejun6YANG Jianguo7College of Mechanical Engineering，Zhejiang University of Technology，Hangzhou 310023，ChinaCollege of Mechanical Engineering，Zhejiang University of Technology，Hangzhou 310023，ChinaGuangdong Provincial Key Laboratory of Advanced Welding Technology for Ships，CSSC Huangpu Wenchong Shipbuilding Company Limited，Guangzhou 510715，ChinaCollege of Mechanical Engineering，Zhejiang University of Technology，Hangzhou 310023，ChinaCollege of Mechanical Engineering，Zhejiang University of Technology，Hangzhou 310023，ChinaCollege of Mechanical Engineering，Zhejiang University of Technology，Hangzhou 310023，ChinaGuangdong Provincial Key Laboratory of Advanced Welding Technology for Ships，CSSC Huangpu Wenchong Shipbuilding Company Limited，Guangzhou 510715，ChinaCollege of Mechanical Engineering，Zhejiang University of Technology，Hangzhou 310023，ChinaAlCoCrFeNi2.1 eutectic high entropy alloy has excellent mechanical properties and promising applications in fields such as hydrogen storage and transportation. The surface of the alloy is hydrogenated by electrochemical hydrogenation， and tensile tests are carried out on H-charged and H-free specimens to compare and analyze the fracture morphology characteristics， and the effect of hydrogen-induced precipitated phase evolution on the mechanical properties of the alloy is studied. The results show that compared with the samples without hydrogen charging， the yield strength of the hydrogen charging solution samples with sulfuric acid concentrations of 0.5 mol/L and 1.0 mol/L decreases by 14.60% and 20.22%， respectively， and the tensile strength decreases by 15.50% and 25.15%， respectively. Additionally， the mechanical properties of the alloy further decrease with the increase of the hydrogen ion concentration in the hydrogen-charged solution， and the fracture region near the surface shows more obvious brittle fracture characteristics. The precipitated phase， which undergoes a phase transition after hydrogen charging， remains on the surface of the BCC phase during fracture to form a higher and denser raised structure， and a structure distinct from the two phases is also found at the phase boundary. The evolution of hydrogen-induced nanoprecipitated phases leads to a decrease in the overall mechanical properties of the alloy.https://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2024.000313eutectic high entropy alloyelectrochemical hydrogen chargingmechanical propertyprecipitate evolution |
| spellingShingle | ZHENG Wenjian WANG Yu YU Yang FENG Daochen YU Zhen WANG Wenjun YAN Dejun YANG Jianguo Effect of hydrogen-induced solid-state phase transformation on mechanical properties of AlCoCrFeNi2.1 eutectic high entropy alloy Cailiao gongcheng eutectic high entropy alloy electrochemical hydrogen charging mechanical property precipitate evolution |
| title | Effect of hydrogen-induced solid-state phase transformation on mechanical properties of AlCoCrFeNi2.1 eutectic high entropy alloy |
| title_full | Effect of hydrogen-induced solid-state phase transformation on mechanical properties of AlCoCrFeNi2.1 eutectic high entropy alloy |
| title_fullStr | Effect of hydrogen-induced solid-state phase transformation on mechanical properties of AlCoCrFeNi2.1 eutectic high entropy alloy |
| title_full_unstemmed | Effect of hydrogen-induced solid-state phase transformation on mechanical properties of AlCoCrFeNi2.1 eutectic high entropy alloy |
| title_short | Effect of hydrogen-induced solid-state phase transformation on mechanical properties of AlCoCrFeNi2.1 eutectic high entropy alloy |
| title_sort | effect of hydrogen induced solid state phase transformation on mechanical properties of alcocrfeni2 1 eutectic high entropy alloy |
| topic | eutectic high entropy alloy electrochemical hydrogen charging mechanical property precipitate evolution |
| url | https://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2024.000313 |
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