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The effect of the filler and post-weld heat treatment on the microstructure, weldability, and mechanical properties of armor steels

AIP Conference Proceedings, ISSN: 1551-7616, Vol: 2538
2023
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Conference Paper Description

The effect of filler and post-weld heat treatment (PWHT) on microstructure, weldability, and mechanical properties of Armor steel was studied. The samples used are Armor steel A and B, which were welded by filler A and B. The samples were subjected to PWHT temperatures of 250 °C and 500 °C with a holding time of 30 minutes. A bending test was performed to measure the weldability of samples. The mechanical properties were characterized by hardness and tensile tests. PWHT affects the microstructure formed in the fusion zone, HAZ, and base metal. In the fusion zone, widmanstätten ferrite transformed into polygonal ferrite. While in HAZ and base metal martensite transformed into tempered martensite. The highest bending angle was achieved on steel A by filler A in an as-welded condition with a bending angle of 72 degrees. The lowest hardness was obtained at the fusion zone, while the highest hardness was obtained at the heat-affected zone (HAZ) in all sample conditions. The highest tensile strength for steel A was achieved in welding using filler A and PWHT temperature of 500 °C with a value of 562.44 MPa while in steel B was achieved in welding using filler B and PWHT temperature of 500 °C with the value of 613.61 MPa.

Bibliographic Details

Akhmad A. Korda; Arnold S. F. Manullang; Achmad Ariaseta; Mancho Resvana; Eddy A. Basuki

AIP Publishing

Physics and Astronomy

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