Effect of post-weld heat treatment on microstructure, crystallography, and mechanical properties of laser beam welded AISI 904L super austenitic stainless steel     
Yazarlar (1)
Prof. Dr. Ceyhun KÖSE Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale
Dergi Adı Engineering Failure Analysis
Dergi ISSN 1350-6307 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q1
Makale Dili Türkçe
Basım Tarihi 04-2024
Cilt No 158
Sayı 1
DOI Numarası 10.1016/j.engfailanal.2024.108025
Makale Linki https://doi.org/10.1016/j.engfailanal.2024.108025
Özet
This research examines the crystallography, microstructure, and mechanical properties of AISI 904L super austenitic stainless steel (SASS) joint by laser beam welding (LBW). The results indicated that the B3 and B4 specimen's weld metal (WM) microstructure (the minimum value at the welding heat input of 0.117 kJ/mm and the maximum value at the welding heat input of 0.200 kJ/mm) comprised almost all austenite (dendritic + interdendritic) phases. Some Cr23C6 and Cr2N precipitates appeared at the grain boundaries and in the interdendritic region due to post-weld heat treatment (PWHT). Besides, it was obtained that the dendritic structure increased due to the rise in heat input. While most of the grains in WM displayed orientation in [1 1 1] and [1 0 1], it was detected that they displayed orientation in [0 0 1] and [1 0 1] with PWHT. While the high-angle grain boundary (HAGB) ratio of the B4 specimen was found to be high, the low-angle grain boundary (LAGB) ratio of the B4H specimen was found to be also high. In addition, the KAM was reduced with the effect of PWHT. Kurdjumov-Sachs (K-S) and Nishiyama-Wasserman (NW) orientation between grains with FCC/BCC structure was observed in WMs of B4 and B4H specimens. The highest mechanical properties were mostly obtained in the specimens joined by the lowest welding heat input. Fracture surfaces of tensile and impact samples of laser welded joints showed mixed mode fractures, i.e. ductile and partially cleavage fractures.
Anahtar Kelimeler
Laser beam welding | AISI 904L | Microstructure | Heat treatment | Crystallography | Mechanical properties
Science Direct
BM Sürdürülebilir Kalkınma Amaçları
Atıf Sayıları
WoS 42
SCOPUS 43
Google Scholar 45
Effect of post-weld heat treatment on microstructure, crystallography, and mechanical properties of laser beam welded AISI 904L super austenitic stainless steel

Paylaş

İletişim
  • Gaziosmanpaşa Üniversitesi, Taşlıçiftlik Yerleşkesi, 60250 Merkez / Tokat
  • unis@gop.edu.tr 3562521616
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