Study on the Microstructure and Properties of Welded Joints of Laser Shock Peening on HC420LA Low-Alloy High-Tensile Steel
Laser shock peening is a promising surface strengthening technology that can effectively improve the mechanical properties of materials. This paper is based on the laser shock peening process for HC420LA low-alloy high-strength steel weldments. Contrast analysis of the evolution of the microstructur...
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| Format: | Article |
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MDPI AG
2023-06-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/16/12/4238 |
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| author | Yu Wang Aixin Feng Xiaoming Pan Chunlun Chen Yacheng Wei Jun Wang |
| author_facet | Yu Wang Aixin Feng Xiaoming Pan Chunlun Chen Yacheng Wei Jun Wang |
| author_sort | Yu Wang |
| collection | DOAJ |
| description | Laser shock peening is a promising surface strengthening technology that can effectively improve the mechanical properties of materials. This paper is based on the laser shock peening process for HC420LA low-alloy high-strength steel weldments. Contrast analysis of the evolution of the microstructure, residual stress distribution and mechanical properties of the welded joints before and after the laser shock peening on each region is carried out; a combination of tensile fracture and impact toughness fracture morphology analyses of laser shock peening on the welded joint strength and toughness regulation mechanism are also completed. The results show that the laser shock peening can refine the microstructure of the welded joint effectively, the microhardness of all areas of the joint increases and the weld residual tensile stresses are transformed into beneficial residual compressive stresses, affecting a layer depth of 600 μm. In addition, the strength and impact toughness of welded joints of HC420LA low-alloy high-strength steel are improved. |
| first_indexed | 2024-03-11T02:13:36Z |
| format | Article |
| id | doaj.art-8baabcd7639742308ce95fd8e928f5b4 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T02:13:36Z |
| publishDate | 2023-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-8baabcd7639742308ce95fd8e928f5b42023-11-18T11:23:27ZengMDPI AGMaterials1996-19442023-06-011612423810.3390/ma16124238Study on the Microstructure and Properties of Welded Joints of Laser Shock Peening on HC420LA Low-Alloy High-Tensile SteelYu Wang0Aixin Feng1Xiaoming Pan2Chunlun Chen3Yacheng Wei4Jun Wang5College of Mechanical and Electrical Engineering, Wenzhou University, Wenzhou 325035, ChinaCollege of Mechanical and Electrical Engineering, Wenzhou University, Wenzhou 325035, ChinaCollege of Mechanical and Electrical Engineering, Wenzhou University, Wenzhou 325035, ChinaCollege of Mechanical and Electrical Engineering, Wenzhou University, Wenzhou 325035, ChinaCollege of Mechanical and Electrical Engineering, Wenzhou University, Wenzhou 325035, ChinaZhejiang Y-Hu Auto Parts Co., Ltd., Wenzhou 325035, ChinaLaser shock peening is a promising surface strengthening technology that can effectively improve the mechanical properties of materials. This paper is based on the laser shock peening process for HC420LA low-alloy high-strength steel weldments. Contrast analysis of the evolution of the microstructure, residual stress distribution and mechanical properties of the welded joints before and after the laser shock peening on each region is carried out; a combination of tensile fracture and impact toughness fracture morphology analyses of laser shock peening on the welded joint strength and toughness regulation mechanism are also completed. The results show that the laser shock peening can refine the microstructure of the welded joint effectively, the microhardness of all areas of the joint increases and the weld residual tensile stresses are transformed into beneficial residual compressive stresses, affecting a layer depth of 600 μm. In addition, the strength and impact toughness of welded joints of HC420LA low-alloy high-strength steel are improved.https://www.mdpi.com/1996-1944/16/12/4238laser shock peeninglow-alloy high-strength steelmicrostructuremechanical properties |
| spellingShingle | Yu Wang Aixin Feng Xiaoming Pan Chunlun Chen Yacheng Wei Jun Wang Study on the Microstructure and Properties of Welded Joints of Laser Shock Peening on HC420LA Low-Alloy High-Tensile Steel Materials laser shock peening low-alloy high-strength steel microstructure mechanical properties |
| title | Study on the Microstructure and Properties of Welded Joints of Laser Shock Peening on HC420LA Low-Alloy High-Tensile Steel |
| title_full | Study on the Microstructure and Properties of Welded Joints of Laser Shock Peening on HC420LA Low-Alloy High-Tensile Steel |
| title_fullStr | Study on the Microstructure and Properties of Welded Joints of Laser Shock Peening on HC420LA Low-Alloy High-Tensile Steel |
| title_full_unstemmed | Study on the Microstructure and Properties of Welded Joints of Laser Shock Peening on HC420LA Low-Alloy High-Tensile Steel |
| title_short | Study on the Microstructure and Properties of Welded Joints of Laser Shock Peening on HC420LA Low-Alloy High-Tensile Steel |
| title_sort | study on the microstructure and properties of welded joints of laser shock peening on hc420la low alloy high tensile steel |
| topic | laser shock peening low-alloy high-strength steel microstructure mechanical properties |
| url | https://www.mdpi.com/1996-1944/16/12/4238 |
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