Evolution of bonding mechanism and fracture mechanism of Ti alloy-steel joint by dual-beam laser welding using Mg-RE (RE=Gd, Y) filler
In this paper, a novel coaxial continuous-pulsed dual-beam laser was proposed to join TC4 titanium alloy with QP980 high-strength steel, and magnesium alloy containing rare-earth elements (Mg-RE) was creatively as filler. The weld appearance, microstructure and mechanical properties of joints obtain...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2024-01-01
|
| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423031472 |
| _version_ | 1797338324183023616 |
|---|---|
| author | Nan li Qiang Lang Yuchen Dong Chunchao Wang Tao Li Hongyang Wang Liming Liu |
| author_facet | Nan li Qiang Lang Yuchen Dong Chunchao Wang Tao Li Hongyang Wang Liming Liu |
| author_sort | Nan li |
| collection | DOAJ |
| description | In this paper, a novel coaxial continuous-pulsed dual-beam laser was proposed to join TC4 titanium alloy with QP980 high-strength steel, and magnesium alloy containing rare-earth elements (Mg-RE) was creatively as filler. The weld appearance, microstructure and mechanical properties of joints obtained by single-beam and dual-beam laser welding were compared and analyzed. And the evolution of bonding mechanism and the fracture mechanism with laser beam energy density was analyzed. The results showed that the appearance and mechanical strength of the joint obtained by dual-beam laser were better than that by single-beam laser. And the maximum tensile shear load of TC4/QP980 lap joint welded by dual-beam laser reached 303 N/mm, which was 124 % of that of single-beam laser welding. The bonding of Mg-RE with QP980 affected by temperature of laser welding and mainly depended on Gd and Y. They just diffused to QP980 under low power and reacted with Fe under high power. And the inter-diffusion of Zr of Mg-RE with Ti of TC4 produced to the bonding of Mg-RE with TC4. The roles of continuous laser and pulsed laser in dual-beam laser welding were revealed in this paper and it showed a great application potential of coaxial dual-beam laser welding technology in dissimilar metal joining. |
| first_indexed | 2024-03-08T09:29:23Z |
| format | Article |
| id | doaj.art-f4a982bf3c3f4a03894258bbb42460f4 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-08T09:29:23Z |
| publishDate | 2024-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-f4a982bf3c3f4a03894258bbb42460f42024-01-31T05:43:32ZengElsevierJournal of Materials Research and Technology2238-78542024-01-012811371148Evolution of bonding mechanism and fracture mechanism of Ti alloy-steel joint by dual-beam laser welding using Mg-RE (RE=Gd, Y) fillerNan li0Qiang Lang1Yuchen Dong2Chunchao Wang3Tao Li4Hongyang Wang5Liming Liu6School of Material Science and Engineering, Dalian University of Technology, Key Laboratory of Liaoning Advanced Welding and Joining Technology, Dalian, 116024, ChinaSchool of Material Science and Engineering, Dalian University of Technology, Key Laboratory of Liaoning Advanced Welding and Joining Technology, Dalian, 116024, ChinaSchool of Material Science and Engineering, Dalian University of Technology, Key Laboratory of Liaoning Advanced Welding and Joining Technology, Dalian, 116024, ChinaSchool of Material Science and Engineering, Dalian University of Technology, Key Laboratory of Liaoning Advanced Welding and Joining Technology, Dalian, 116024, ChinaSchool of Material Science and Engineering, Dalian University of Technology, Key Laboratory of Liaoning Advanced Welding and Joining Technology, Dalian, 116024, ChinaCorresponding author. School of Materials Science and Engineering Dalian University of Technology, Dalian, 116000, China.; School of Material Science and Engineering, Dalian University of Technology, Key Laboratory of Liaoning Advanced Welding and Joining Technology, Dalian, 116024, ChinaSchool of Material Science and Engineering, Dalian University of Technology, Key Laboratory of Liaoning Advanced Welding and Joining Technology, Dalian, 116024, ChinaIn this paper, a novel coaxial continuous-pulsed dual-beam laser was proposed to join TC4 titanium alloy with QP980 high-strength steel, and magnesium alloy containing rare-earth elements (Mg-RE) was creatively as filler. The weld appearance, microstructure and mechanical properties of joints obtained by single-beam and dual-beam laser welding were compared and analyzed. And the evolution of bonding mechanism and the fracture mechanism with laser beam energy density was analyzed. The results showed that the appearance and mechanical strength of the joint obtained by dual-beam laser were better than that by single-beam laser. And the maximum tensile shear load of TC4/QP980 lap joint welded by dual-beam laser reached 303 N/mm, which was 124 % of that of single-beam laser welding. The bonding of Mg-RE with QP980 affected by temperature of laser welding and mainly depended on Gd and Y. They just diffused to QP980 under low power and reacted with Fe under high power. And the inter-diffusion of Zr of Mg-RE with Ti of TC4 produced to the bonding of Mg-RE with TC4. The roles of continuous laser and pulsed laser in dual-beam laser welding were revealed in this paper and it showed a great application potential of coaxial dual-beam laser welding technology in dissimilar metal joining.http://www.sciencedirect.com/science/article/pii/S2238785423031472Dual-beam laserMicrostructureMechanical propertiesBonding mechanismFracture mechanismMg-RE |
| spellingShingle | Nan li Qiang Lang Yuchen Dong Chunchao Wang Tao Li Hongyang Wang Liming Liu Evolution of bonding mechanism and fracture mechanism of Ti alloy-steel joint by dual-beam laser welding using Mg-RE (RE=Gd, Y) filler Journal of Materials Research and Technology Dual-beam laser Microstructure Mechanical properties Bonding mechanism Fracture mechanism Mg-RE |
| title | Evolution of bonding mechanism and fracture mechanism of Ti alloy-steel joint by dual-beam laser welding using Mg-RE (RE=Gd, Y) filler |
| title_full | Evolution of bonding mechanism and fracture mechanism of Ti alloy-steel joint by dual-beam laser welding using Mg-RE (RE=Gd, Y) filler |
| title_fullStr | Evolution of bonding mechanism and fracture mechanism of Ti alloy-steel joint by dual-beam laser welding using Mg-RE (RE=Gd, Y) filler |
| title_full_unstemmed | Evolution of bonding mechanism and fracture mechanism of Ti alloy-steel joint by dual-beam laser welding using Mg-RE (RE=Gd, Y) filler |
| title_short | Evolution of bonding mechanism and fracture mechanism of Ti alloy-steel joint by dual-beam laser welding using Mg-RE (RE=Gd, Y) filler |
| title_sort | evolution of bonding mechanism and fracture mechanism of ti alloy steel joint by dual beam laser welding using mg re re gd y filler |
| topic | Dual-beam laser Microstructure Mechanical properties Bonding mechanism Fracture mechanism Mg-RE |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423031472 |
| work_keys_str_mv | AT nanli evolutionofbondingmechanismandfracturemechanismoftialloysteeljointbydualbeamlaserweldingusingmgreregdyfiller AT qianglang evolutionofbondingmechanismandfracturemechanismoftialloysteeljointbydualbeamlaserweldingusingmgreregdyfiller AT yuchendong evolutionofbondingmechanismandfracturemechanismoftialloysteeljointbydualbeamlaserweldingusingmgreregdyfiller AT chunchaowang evolutionofbondingmechanismandfracturemechanismoftialloysteeljointbydualbeamlaserweldingusingmgreregdyfiller AT taoli evolutionofbondingmechanismandfracturemechanismoftialloysteeljointbydualbeamlaserweldingusingmgreregdyfiller AT hongyangwang evolutionofbondingmechanismandfracturemechanismoftialloysteeljointbydualbeamlaserweldingusingmgreregdyfiller AT limingliu evolutionofbondingmechanismandfracturemechanismoftialloysteeljointbydualbeamlaserweldingusingmgreregdyfiller |