Microstructure, mechanical and fractographic behaviour of the diffusion welded joints of AA2219 and Ti-6Al-4V for aerospace applications
Diffusion welding is an advanced joining process that assures the feasibility of joining dissimilar metal alloys without producing metallurgical impurities at the joint interface. Two significant aerospace alloys, AA2219 and Ti-6Al-4V, are diffusion welded for the various holding times (30-120 minut...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Gruppo Italiano Frattura
2025-01-01
|
| Series: | Fracture and Structural Integrity |
| Subjects: | |
| Online Access: | https://www.fracturae.com/index.php/fis/article/view/5071/4144 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841560989440409600 |
|---|---|
| author | Manjunath Vatnalmath V Auradi V. Bharath Anirudh Bharadwaj Chethan Gowda Madeva Nagaral |
| author_facet | Manjunath Vatnalmath V Auradi V. Bharath Anirudh Bharadwaj Chethan Gowda Madeva Nagaral |
| author_sort | Manjunath Vatnalmath |
| collection | DOAJ |
| description | Diffusion welding is an advanced joining process that assures the feasibility of joining dissimilar metal alloys without producing metallurgical impurities at the joint interface. Two significant aerospace alloys, AA2219 and Ti-6Al-4V, are diffusion welded for the various holding times (30-120 minutes) by keeping the bonding temperature and pressure constant. The effect of holding time on the microstructure of the diffusion welded joints is evaluated using scanning electron microscopy (SEM), and the diffusion behaviour across the joint interface is ensued by the line scan energy dispersive spectroscopy (EDS). The obtained results show that the hardness across the joint interface is increased with increase in holding time. Furthermore, the maximum shear strength of 143.58 MPa is achieved for the joint formed at the holding time of 90 minutes and reduced thereafter. The formation of a thick intermetallic layer at a higher holding time strongly affects the shear strength. It is evident from the resulting fractured surfaces that the joints predominantly failed at the bonding interface, showcasing the brittle kind of failure. The X-ray diffraction (XRD) study on the fractured surfaces substantiates the formation of AlTi, Al2Ti and Al3Ti intermetallic compounds |
| format | Article |
| id | doaj-art-babff7b25ba44261abd55b89004de378 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-babff7b25ba44261abd55b89004de3782025-01-03T08:51:16ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932025-01-011971374810.3221/IGF-ESIS.71.0410.3221/IGF-ESIS.71.04Microstructure, mechanical and fractographic behaviour of the diffusion welded joints of AA2219 and Ti-6Al-4V for aerospace applicationsManjunath VatnalmathV AuradiV. BharathAnirudh BharadwajChethan GowdaMadeva NagaralDiffusion welding is an advanced joining process that assures the feasibility of joining dissimilar metal alloys without producing metallurgical impurities at the joint interface. Two significant aerospace alloys, AA2219 and Ti-6Al-4V, are diffusion welded for the various holding times (30-120 minutes) by keeping the bonding temperature and pressure constant. The effect of holding time on the microstructure of the diffusion welded joints is evaluated using scanning electron microscopy (SEM), and the diffusion behaviour across the joint interface is ensued by the line scan energy dispersive spectroscopy (EDS). The obtained results show that the hardness across the joint interface is increased with increase in holding time. Furthermore, the maximum shear strength of 143.58 MPa is achieved for the joint formed at the holding time of 90 minutes and reduced thereafter. The formation of a thick intermetallic layer at a higher holding time strongly affects the shear strength. It is evident from the resulting fractured surfaces that the joints predominantly failed at the bonding interface, showcasing the brittle kind of failure. The X-ray diffraction (XRD) study on the fractured surfaces substantiates the formation of AlTi, Al2Ti and Al3Ti intermetallic compoundshttps://www.fracturae.com/index.php/fis/article/view/5071/4144aa2219diffusion weldingmicrostructureinterfaceintermetallicbrittle fracture |
| spellingShingle | Manjunath Vatnalmath V Auradi V. Bharath Anirudh Bharadwaj Chethan Gowda Madeva Nagaral Microstructure, mechanical and fractographic behaviour of the diffusion welded joints of AA2219 and Ti-6Al-4V for aerospace applications Fracture and Structural Integrity aa2219 diffusion welding microstructure interface intermetallic brittle fracture |
| title | Microstructure, mechanical and fractographic behaviour of the diffusion welded joints of AA2219 and Ti-6Al-4V for aerospace applications |
| title_full | Microstructure, mechanical and fractographic behaviour of the diffusion welded joints of AA2219 and Ti-6Al-4V for aerospace applications |
| title_fullStr | Microstructure, mechanical and fractographic behaviour of the diffusion welded joints of AA2219 and Ti-6Al-4V for aerospace applications |
| title_full_unstemmed | Microstructure, mechanical and fractographic behaviour of the diffusion welded joints of AA2219 and Ti-6Al-4V for aerospace applications |
| title_short | Microstructure, mechanical and fractographic behaviour of the diffusion welded joints of AA2219 and Ti-6Al-4V for aerospace applications |
| title_sort | microstructure mechanical and fractographic behaviour of the diffusion welded joints of aa2219 and ti 6al 4v for aerospace applications |
| topic | aa2219 diffusion welding microstructure interface intermetallic brittle fracture |
| url | https://www.fracturae.com/index.php/fis/article/view/5071/4144 |
| work_keys_str_mv | AT manjunathvatnalmath microstructuremechanicalandfractographicbehaviourofthediffusionweldedjointsofaa2219andti6al4vforaerospaceapplications AT vauradi microstructuremechanicalandfractographicbehaviourofthediffusionweldedjointsofaa2219andti6al4vforaerospaceapplications AT vbharath microstructuremechanicalandfractographicbehaviourofthediffusionweldedjointsofaa2219andti6al4vforaerospaceapplications AT anirudhbharadwaj microstructuremechanicalandfractographicbehaviourofthediffusionweldedjointsofaa2219andti6al4vforaerospaceapplications AT chethangowda microstructuremechanicalandfractographicbehaviourofthediffusionweldedjointsofaa2219andti6al4vforaerospaceapplications AT madevanagaral microstructuremechanicalandfractographicbehaviourofthediffusionweldedjointsofaa2219andti6al4vforaerospaceapplications |