Effect of heat input on the mechanical and metallurgical characteristics of TIG welded joints / subhas Chandra Moi...[et al.]
This paper presents the study of effect of heat input on the joint quality of tungsten inert gas (TIG) welded specimens. Three different heat input combinations selected as low heat (0.75kJ/mm), medium heat (0.90kJ/mm) and high heat (1.05kJ/mm) have been applied during the operation of TIG welding p...
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| Format: | Article |
| Language: | English |
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Faculty of Mechanical Engineering Universiti Teknologi MARA (UiTM)
2019
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| Subjects: | |
| Online Access: | https://ir.uitm.edu.my/id/eprint/36413/ |
| _version_ | 1848809045661581312 |
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| author | Subhas, Chandra Moi Pradip, Kumar Pal Asish, Bandyopadhyay Ramesh, Rudrapati |
| author_facet | Subhas, Chandra Moi Pradip, Kumar Pal Asish, Bandyopadhyay Ramesh, Rudrapati |
| author_sort | Subhas, Chandra Moi |
| building | UiTM Institutional Repository |
| collection | Online Access |
| description | This paper presents the study of effect of heat input on the joint quality of tungsten inert gas (TIG) welded specimens. Three different heat input combinations selected as low heat (0.75kJ/mm), medium heat (0.90kJ/mm) and high heat (1.05kJ/mm) have been applied during the operation of TIG welding process on 316L austenitic stainless steel. Welded joints being prepared using a semiautomatic TIG welding machine, the effect of heat input is investigated on the weld bead geometry and mechanical-metallurgical characteristics of the joints. It is observed that as heat input increases, the width of weld bead increases, where as height of weld bead decreases with increasing heat input. Tensile strength as well as hardness increases with increase of heat input up to a threshold value and thereafter it start decreasing. The results of the investigation indicate that the joint prepared using medium heat input depicts higher tensile strength, percentage elongation, yield strength and higher micro hardness value than those joints made using low and high heat input due to smaller dendrite size and lesser interdendritic spacing in the weld zone and formation of very fine skeletal δ-ferrite in plain austenitic matrix. A large number of very fine and shallow dimples are observed in SEM fractograph of the joint made using medium heat input. |
| first_indexed | 2025-11-14T23:08:22Z |
| format | Article |
| id | uitm-36413 |
| institution | Universiti Teknologi MARA |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T23:08:22Z |
| publishDate | 2019 |
| publisher | Faculty of Mechanical Engineering Universiti Teknologi MARA (UiTM) |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | uitm-364132020-11-09T07:48:11Z https://ir.uitm.edu.my/id/eprint/36413/ Effect of heat input on the mechanical and metallurgical characteristics of TIG welded joints / subhas Chandra Moi...[et al.] jmeche Subhas, Chandra Moi Pradip, Kumar Pal Asish, Bandyopadhyay Ramesh, Rudrapati TJ Mechanical engineering and machinery This paper presents the study of effect of heat input on the joint quality of tungsten inert gas (TIG) welded specimens. Three different heat input combinations selected as low heat (0.75kJ/mm), medium heat (0.90kJ/mm) and high heat (1.05kJ/mm) have been applied during the operation of TIG welding process on 316L austenitic stainless steel. Welded joints being prepared using a semiautomatic TIG welding machine, the effect of heat input is investigated on the weld bead geometry and mechanical-metallurgical characteristics of the joints. It is observed that as heat input increases, the width of weld bead increases, where as height of weld bead decreases with increasing heat input. Tensile strength as well as hardness increases with increase of heat input up to a threshold value and thereafter it start decreasing. The results of the investigation indicate that the joint prepared using medium heat input depicts higher tensile strength, percentage elongation, yield strength and higher micro hardness value than those joints made using low and high heat input due to smaller dendrite size and lesser interdendritic spacing in the weld zone and formation of very fine skeletal δ-ferrite in plain austenitic matrix. A large number of very fine and shallow dimples are observed in SEM fractograph of the joint made using medium heat input. Faculty of Mechanical Engineering Universiti Teknologi MARA (UiTM) 2019 Article PeerReviewed text en https://ir.uitm.edu.my/id/eprint/36413/1/36413.pdf Subhas, Chandra Moi and Pradip, Kumar Pal and Asish, Bandyopadhyay and Ramesh, Rudrapati (2019) Effect of heat input on the mechanical and metallurgical characteristics of TIG welded joints / subhas Chandra Moi...[et al.]. (2019) Journal of Mechanical Engineering (JMechE) <https://ir.uitm.edu.my/view/publication/Journal_of_Mechanical_Engineering_=28JMechE=29.html>, 16 (2). pp. 29-40. ISSN 1823-5514 ; 2550-164X https://jmeche.uitm.edu.my/ |
| spellingShingle | TJ Mechanical engineering and machinery Subhas, Chandra Moi Pradip, Kumar Pal Asish, Bandyopadhyay Ramesh, Rudrapati Effect of heat input on the mechanical and metallurgical characteristics of TIG welded joints / subhas Chandra Moi...[et al.] |
| title | Effect of heat input on the mechanical and metallurgical characteristics of TIG welded joints / subhas Chandra Moi...[et al.] |
| title_full | Effect of heat input on the mechanical and metallurgical characteristics of TIG welded joints / subhas Chandra Moi...[et al.] |
| title_fullStr | Effect of heat input on the mechanical and metallurgical characteristics of TIG welded joints / subhas Chandra Moi...[et al.] |
| title_full_unstemmed | Effect of heat input on the mechanical and metallurgical characteristics of TIG welded joints / subhas Chandra Moi...[et al.] |
| title_short | Effect of heat input on the mechanical and metallurgical characteristics of TIG welded joints / subhas Chandra Moi...[et al.] |
| title_sort | effect of heat input on the mechanical and metallurgical characteristics of tig welded joints / subhas chandra moi...[et al.] |
| topic | TJ Mechanical engineering and machinery |
| url | https://ir.uitm.edu.my/id/eprint/36413/ https://ir.uitm.edu.my/id/eprint/36413/ |