Laser brazing of Inconel-718 with BNi-2 filler metal
Inconel-718 is widely used in the aircraft industry due to its durability and strength. They are constantly subjected to extreme stresses and requires regular maintenance to remain operational. Brazing is commonly used to help repair damaged parts by fusing two metals through heating and melting a b...
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| Other Authors: | |
| Format: | Final Year Project (FYP) |
| Language: | English |
| Published: |
2019
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| Online Access: | http://hdl.handle.net/10356/77736 |
| _version_ | 1811683019481677824 |
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| author | Koh, Boris Yee Hui |
| author2 | Tan Ming Jen |
| author_facet | Tan Ming Jen Koh, Boris Yee Hui |
| author_sort | Koh, Boris Yee Hui |
| collection | NTU |
| description | Inconel-718 is widely used in the aircraft industry due to its durability and strength. They are constantly subjected to extreme stresses and requires regular maintenance to remain operational. Brazing is commonly used to help repair damaged parts by fusing two metals through heating and melting a brazing alloy that is able to bond the two separate metals together. However, the extreme temperatures to melt the metals could result in microstructural changes. In this project, Inconel-718 superalloy was Transient Liquid Phase (TLP) bonded with BNi-2 as the filler meter, to analyze the effects on the microhardness and tensile strength of Inconel-718. The two metals were brazed at 1015°C for 15 minutes before cooling down to room temperature. Scanning Electron Microscopy (SEM) and Electron Backscatter Diffusion (EBSD) were used in analysing the fractured surfaces and phase composition respectively. The brazed joints had a brazing gap that was above the Maximum Brazing Clearance (MBC), resulting in brittle fracture failure at the joint centreline due to the formation of brittle eutectic phases. The hardness generally increased from the Base Metal to the Brazed Alloy. |
| first_indexed | 2024-10-01T04:06:05Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/77736 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:06:05Z |
| publishDate | 2019 |
| record_format | dspace |
| spelling | ntu-10356/777362023-03-04T19:12:16Z Laser brazing of Inconel-718 with BNi-2 filler metal Koh, Boris Yee Hui Tan Ming Jen Yan Guangxu School of Mechanical and Aerospace Engineering DRNTU::Engineering::Mechanical engineering Inconel-718 is widely used in the aircraft industry due to its durability and strength. They are constantly subjected to extreme stresses and requires regular maintenance to remain operational. Brazing is commonly used to help repair damaged parts by fusing two metals through heating and melting a brazing alloy that is able to bond the two separate metals together. However, the extreme temperatures to melt the metals could result in microstructural changes. In this project, Inconel-718 superalloy was Transient Liquid Phase (TLP) bonded with BNi-2 as the filler meter, to analyze the effects on the microhardness and tensile strength of Inconel-718. The two metals were brazed at 1015°C for 15 minutes before cooling down to room temperature. Scanning Electron Microscopy (SEM) and Electron Backscatter Diffusion (EBSD) were used in analysing the fractured surfaces and phase composition respectively. The brazed joints had a brazing gap that was above the Maximum Brazing Clearance (MBC), resulting in brittle fracture failure at the joint centreline due to the formation of brittle eutectic phases. The hardness generally increased from the Base Metal to the Brazed Alloy. Bachelor of Engineering (Mechanical Engineering) 2019-06-04T08:46:14Z 2019-06-04T08:46:14Z 2019 Final Year Project (FYP) http://hdl.handle.net/10356/77736 en Nanyang Technological University 67 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Mechanical engineering Koh, Boris Yee Hui Laser brazing of Inconel-718 with BNi-2 filler metal |
| title | Laser brazing of Inconel-718 with BNi-2 filler metal |
| title_full | Laser brazing of Inconel-718 with BNi-2 filler metal |
| title_fullStr | Laser brazing of Inconel-718 with BNi-2 filler metal |
| title_full_unstemmed | Laser brazing of Inconel-718 with BNi-2 filler metal |
| title_short | Laser brazing of Inconel-718 with BNi-2 filler metal |
| title_sort | laser brazing of inconel 718 with bni 2 filler metal |
| topic | DRNTU::Engineering::Mechanical engineering |
| url | http://hdl.handle.net/10356/77736 |
| work_keys_str_mv | AT kohborisyeehui laserbrazingofinconel718withbni2fillermetal |