In-depth analysis of intragranular acicular ferrite three-dimensional morphology. (August 2020)

• Record Type: Journal Article
• Authors: Wu, Shaowen; Zhang, Caijun; Zhu, Liguang; Zhang, Qingjun; Ma, Xuegang
• Is Part Of: Scripta materialia. Number 185(2020)
• Page Start: 61
• Page End: 65
• Publication Date: 2020-08
• Subjects: Three-dimensional morphology -- Intragranular acicular ferrite -- Focused ion beam -- Partition local equilibrium -- Sub-grain; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2020.03.007
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: Precipitation of intragranular acicular ferrite (IAF) is the principle means for increasing the strength of steel. This study investigated the three-dimensional morphology and growth behavior of IAF. Focused ion beam, confocal laser scanning microscopy and electron backscattered diffraction revealed that IAF had a plate-like morphology with numerous pits and defects when precipitated at 750 °C for 1 min and was needle-like with a smooth surface when precipitated at 700 °C for 1 min. Furthermore, sub-grains were observed within the IAF. This study elucidates more on the theoretical data of the IAF 3D morphology and provides novel insights into IAF. Graph abstract: Image, graphical abstract