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Effect of Multiple Thermal Cycles on the Microstructure and Mechanical Properties of AISI 1045 Weldments

[Image: see text] AISI 1045 medium carbon steel sheets having 10 mm thickness were subjected to the shielded metal arc welding process with three, five, and seven passes. The variations in the microstructure due to multiple thermal cycles in the heat-affected zone (HAZ), base metal (BM), and fusion...

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Detalles Bibliográficos
Autores principales: Makhdoom, Muhammad Atif, Ahmed, Furqan, Channa, Iftikhar Ahmed, Inam, Aqil, Riaz, Fahad, Siyal, Sajid Hussain, Shar, Muhammad Ali, Alhazaa, Abdulaziz
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2022
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9686189/
https://www.ncbi.nlm.nih.gov/pubmed/36440109
http://dx.doi.org/10.1021/acsomega.2c05249
Descripción
Sumario:[Image: see text] AISI 1045 medium carbon steel sheets having 10 mm thickness were subjected to the shielded metal arc welding process with three, five, and seven passes. The variations in the microstructure due to multiple thermal cycles in the heat-affected zone (HAZ), base metal (BM), and fusion zone (FZ) have been investigated and correlated with measured mechanical properties. Upon comparing fracture mechanics and mechanical properties with microstructural observations, it is elucidated that samples become ductile by increasing the number of thermal cycles which can be attributed to the transformations in the ferrite morphology in the HAZ. Based on mechanical, microstructural, and fracture analysis, it is concluded that post-weld heat treatment can be avoided if the number of passes during welding is increased.