The effects of ultrasonic vibration on microstructural changes and mechanical properties of Mg alloy joint
The weld of AZ31 Mg alloy was performed via ultrasonic vibration assistance process. The metallographic structure observation, scanning electron microscope observation, hardness detection, tensile test and fracture morphology observation were performed to analyze the influences of ultrasonic vibrati...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2021-01-01
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| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/abe13a |
| _version_ | 1797746647388651520 |
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| author | Fangzhou Yang Bing Liu |
| author_facet | Fangzhou Yang Bing Liu |
| author_sort | Fangzhou Yang |
| collection | DOAJ |
| description | The weld of AZ31 Mg alloy was performed via ultrasonic vibration assistance process. The metallographic structure observation, scanning electron microscope observation, hardness detection, tensile test and fracture morphology observation were performed to analyze the influences of ultrasonic vibration on the microstructure and mechanical properties of welded joints. In this paper, the ultrasonic vibration with power in the 0–1.5 kW was successfully introduced into the weld pool by filler wire, which had a series of effects on the weld. The results indicated that ultrasonic induced agitation in the molten pool can reduce or even eliminate the porosity in the weld zone. Besides, for joints treated by 1.0 kW ultrasonic process, the average grain size of weld zone decreased to 28 μ m, owing to the acoustic flow and cavitation effects caused by ultrasonic process. Under optimized ultrasonic power of 1.0 kW, the sound Mg alloy joint with the maximum tensile strength of 256 MPa was obtained and the fracture surface presented plastic fracture characteristics. |
| first_indexed | 2024-03-12T15:40:50Z |
| format | Article |
| id | doaj.art-0bd3dcb8118f435d8298757427d427b4 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:40:50Z |
| publishDate | 2021-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-0bd3dcb8118f435d8298757427d427b42023-08-09T15:58:51ZengIOP PublishingMaterials Research Express2053-15912021-01-018202651210.1088/2053-1591/abe13aThe effects of ultrasonic vibration on microstructural changes and mechanical properties of Mg alloy jointFangzhou Yang0Bing Liu1https://orcid.org/0000-0003-1630-6031College of Materials Science and Engineering, Chongqing University of Arts and Sciences , 319# Honghe Avenue, Yongchuan District, Chongqing 402160, People’s Republic of ChinaCollege of Materials Science and Engineering, Chongqing University of Arts and Sciences , 319# Honghe Avenue, Yongchuan District, Chongqing 402160, People’s Republic of ChinaThe weld of AZ31 Mg alloy was performed via ultrasonic vibration assistance process. The metallographic structure observation, scanning electron microscope observation, hardness detection, tensile test and fracture morphology observation were performed to analyze the influences of ultrasonic vibration on the microstructure and mechanical properties of welded joints. In this paper, the ultrasonic vibration with power in the 0–1.5 kW was successfully introduced into the weld pool by filler wire, which had a series of effects on the weld. The results indicated that ultrasonic induced agitation in the molten pool can reduce or even eliminate the porosity in the weld zone. Besides, for joints treated by 1.0 kW ultrasonic process, the average grain size of weld zone decreased to 28 μ m, owing to the acoustic flow and cavitation effects caused by ultrasonic process. Under optimized ultrasonic power of 1.0 kW, the sound Mg alloy joint with the maximum tensile strength of 256 MPa was obtained and the fracture surface presented plastic fracture characteristics.https://doi.org/10.1088/2053-1591/abe13aweldingultrasonic vibrationmagnesium alloymicrostructuretensile strength |
| spellingShingle | Fangzhou Yang Bing Liu The effects of ultrasonic vibration on microstructural changes and mechanical properties of Mg alloy joint Materials Research Express welding ultrasonic vibration magnesium alloy microstructure tensile strength |
| title | The effects of ultrasonic vibration on microstructural changes and mechanical properties of Mg alloy joint |
| title_full | The effects of ultrasonic vibration on microstructural changes and mechanical properties of Mg alloy joint |
| title_fullStr | The effects of ultrasonic vibration on microstructural changes and mechanical properties of Mg alloy joint |
| title_full_unstemmed | The effects of ultrasonic vibration on microstructural changes and mechanical properties of Mg alloy joint |
| title_short | The effects of ultrasonic vibration on microstructural changes and mechanical properties of Mg alloy joint |
| title_sort | effects of ultrasonic vibration on microstructural changes and mechanical properties of mg alloy joint |
| topic | welding ultrasonic vibration magnesium alloy microstructure tensile strength |
| url | https://doi.org/10.1088/2053-1591/abe13a |
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