Investigation of microstructure and mechanical properties of titanium alloy sheet using low power Nd-YAG laser welding process
© 2018 Institute of Materials and Machine Mechanics, Slovak Academy of Sciences. All rights reserved. In the present investigation, welding of 1 mm thick Ti-6Al-4V sheet has been done by Pulsed Wave (PW) Nd-YAG laser with a variation of laser power from 100 to 400W and welding speed from 4 to 6 mm s...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Published: |
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/68611 |
| _version_ | 1848761845936029696 |
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| author | Kumar, U. Gope, D. Kumar, R. Chattopadhyaya, S. Das, A. Pramanik, Alokesh Krolczyk, G. |
| author_facet | Kumar, U. Gope, D. Kumar, R. Chattopadhyaya, S. Das, A. Pramanik, Alokesh Krolczyk, G. |
| author_sort | Kumar, U. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2018 Institute of Materials and Machine Mechanics, Slovak Academy of Sciences. All rights reserved. In the present investigation, welding of 1 mm thick Ti-6Al-4V sheet has been done by Pulsed Wave (PW) Nd-YAG laser with a variation of laser power from 100 to 400W and welding speed from 4 to 6 mm s -1 . The microstructure and microhardness of the fusion zone indicate that the finely serrated and regular plate-shaped microstructures and the resultant hardness in the welds are the key factors behind the enhanced tensile strength of all joints. The weld bead size increases with decreasing welding speed and vice versa. The hardness increases around the heat affected zone as compared to that of the parent metal, and it is the maximum at the centre of the welded region. In the investigation, the tensile strength of specimen with different process parameters has been found to be approximately equal to the tensile strength of the parent metal. In XRD analysis, the weld zone has been found to consist of 78 % a and 22 % ß peaks where two ß-titanium peaks (bcc) 100 occur at 39.5110° and 56.9120°. |
| first_indexed | 2025-11-14T10:38:09Z |
| format | Journal Article |
| id | curtin-20.500.11937-68611 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:38:09Z |
| publishDate | 2018 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-686112018-07-12T03:05:18Z Investigation of microstructure and mechanical properties of titanium alloy sheet using low power Nd-YAG laser welding process Kumar, U. Gope, D. Kumar, R. Chattopadhyaya, S. Das, A. Pramanik, Alokesh Krolczyk, G. © 2018 Institute of Materials and Machine Mechanics, Slovak Academy of Sciences. All rights reserved. In the present investigation, welding of 1 mm thick Ti-6Al-4V sheet has been done by Pulsed Wave (PW) Nd-YAG laser with a variation of laser power from 100 to 400W and welding speed from 4 to 6 mm s -1 . The microstructure and microhardness of the fusion zone indicate that the finely serrated and regular plate-shaped microstructures and the resultant hardness in the welds are the key factors behind the enhanced tensile strength of all joints. The weld bead size increases with decreasing welding speed and vice versa. The hardness increases around the heat affected zone as compared to that of the parent metal, and it is the maximum at the centre of the welded region. In the investigation, the tensile strength of specimen with different process parameters has been found to be approximately equal to the tensile strength of the parent metal. In XRD analysis, the weld zone has been found to consist of 78 % a and 22 % ß peaks where two ß-titanium peaks (bcc) 100 occur at 39.5110° and 56.9120°. 2018 Journal Article http://hdl.handle.net/20.500.11937/68611 10.4149/km_2018_2_121 restricted |
| spellingShingle | Kumar, U. Gope, D. Kumar, R. Chattopadhyaya, S. Das, A. Pramanik, Alokesh Krolczyk, G. Investigation of microstructure and mechanical properties of titanium alloy sheet using low power Nd-YAG laser welding process |
| title | Investigation of microstructure and mechanical properties of titanium alloy sheet using low power Nd-YAG laser welding process |
| title_full | Investigation of microstructure and mechanical properties of titanium alloy sheet using low power Nd-YAG laser welding process |
| title_fullStr | Investigation of microstructure and mechanical properties of titanium alloy sheet using low power Nd-YAG laser welding process |
| title_full_unstemmed | Investigation of microstructure and mechanical properties of titanium alloy sheet using low power Nd-YAG laser welding process |
| title_short | Investigation of microstructure and mechanical properties of titanium alloy sheet using low power Nd-YAG laser welding process |
| title_sort | investigation of microstructure and mechanical properties of titanium alloy sheet using low power nd-yag laser welding process |
| url | http://hdl.handle.net/20.500.11937/68611 |