Jun 1, 2023 · A novel in-situ scanning electron microscope (SEM) characterization technique for observing phase transformation is developed and its results studied and compared to well-founded experimental ex-situ methods as well as numerical modelling of bainite formation.

May 21, 2020 · Phase analysis using OM and SEM is a method of measuring the phase fraction by differentiating between the shapes of martensite and bainite. Analysis with OM and SEM has the advantage of being able to easily measure phase fractions as it makes macroscopic observations of structures for phase analysis.

Sep 1, 2022 · Deep learning framework for segmentation of M-A islands in bainite from SEM images. First, the image data passes several pre-processing steps before training and testing a segmentation model based on Detectron2. In total, three models are specialized to identify different characteristics of the M-A islands.

microstructures of lower bainite and tempered martensite to gain deeper insights into how carbides influence hydrogen embrittlement resistance. Conventional methods for characterizing carbides in martensitic and bainitic steels rely on techniques such as Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM),

Dec 2, 2023 · Abstract: This study employs deep learning techniques to segment scanning electron microscope images, enabling a quantitative analysis of carbide precipitates in lower bainite and tempered martensite steels with comparable strength. Following segmentation, carbides are investigated, and their volume percentage, size distribution, and ...

In-situ SEM characterization and numerical modelling of bainite formation and impingement of a mediumcarbon, low-alloy steel. HAL Id: hal-04595599 https://hal.science/hal-04595599v1.

The image obtained via scanning electron microscopy (SEM) (Fig. 6C) clearly shows transition carbides inside bainite grains, indicating the formation of lower bainite (LI et al., 2010;...

Feb 24, 2022 · Each of the three datasets correspond to a specific cooling strategy (i,ii or iii) of a bainitic steel and therefore to a bainitic microstructure with specific characteristics. After cropping the image size of each dataset, sub-datasets are created with image resolution: 768x768, 512x512, 256x256, 192x192, 128x128 and 64x64 (only for dataset II).

Feb 15, 2016 · An orthogonally arranged focused ion beam and a scanning electron microscope were employed to observe three-dimensional (3D) morphology of the bainite phase, in addition to compositional analysis by using a scanning transmission electron microscope equipped with a double-detector energy-dispersive X-ray spectrometer system.

Dec 1, 2016 · Since the major strengthening mechanisms in nanocrystalline bainitic steels arise from the exceptionally small size of the bainitc ferrite plate, accurate determination of this parameter is fundamental for quantitative relating the microstructure to the mechanical properties.