Results 1 to 10 of about 1,228 (198)

Datasets acquired with correlative microscopy method for delineation of prior austenite grain boundaries and characterization of prior austenite grain size in a low-alloy high-performance steel

Data in Brief, 2019
Prior studies on martensitic steel microstructures have either delineated the prior austenite grain boundaries via chemical etching or reconstructed the prior austenite grains from crystallographic orientations measured with electron backscattered ...
V. Sinha, M. Gonzales, E.J. Payton
doaj   +3 more sources

Novel reconstruction approaches of austenitic annealing twin boundaries and grain boundaries of ultrafine grained prior austenite

Materials & Design, 2023
Gaining access to the parent microstructural information is of great significance to explore transformation mechanism and mechanical properties. As a powerful route, existing automatic reconstruction techniques still have two unsolved issues for lath ...
Duanjun Sun, Zheng Zhou, Kun Zhang, Xingyun Yang, Xiaohui Liu, Zhenghong Guo, Jianfeng Gu   +6 more
doaj   +2 more sources

Effect of γ→α Phase Transformation on Refining Austenite Grains of Microalloyed Steel in Continuous Casting by Simulation

High Temperature Materials and Processes, 2016
The formation of coarse prior austenite grain is a key factor to promote transverse crack, and the transverse crack susceptibility can be reduced by refining the austenite grain size.
Guanghua Wen, Linqing Luo, Ping Tang
exaly   +2 more sources

Efficient reconstruction of prior austenite grains in steel from etched light optical micrographs using deep learning and annotations from correlative microscopy

Frontiers in Materials, 2022
The high-temperature austenite phase is the initial state of practically all technologically relevant hot forming and heat treatment operations in steel processing. The phenomena occurring in austenite, such as recrystallization or grain growth, can have
Ali Rıza Durmaz, Oleg Shchyglo, Marc Ackermann   +2 more
exaly   +3 more sources

The effect of network cementite dissolution on the nucleation and growth of prior austenite grains in high carbon low alloy steels

Journal of Materials Research and Technology
The state of austenite grains has an essential role in the microstructure transformation and mechanical properties of alloy steel during heat treatment or subsequent hot working.
Xianming Zhao
exaly   +3 more sources

Effect of Prior Austenite Grain Size on the Hydrogen Diffusion Behavior in 30MnB5 Steel. [PDF]

Materials (Basel)
In this study, we investigated the effect of heat treatment-induced grain size on the hydrogen embrittlement (HE) resistance of 30MnB5 steel, focusing particularly on the variation in prior austenite grain (PAG) size. As the heat treatment time increased, the PAGs coarsened, leading the martensite packets, blocks, and lath sizes to also coarsen. As the
Nam H, Seo M, Park C.
europepmc   +3 more sources

Digital Reconstruction of Engineered Austenite: Revisiting Effects of Grain Size and Ausforming on Variant Selection of Martensite

Metals, 2022
In this work, the variant selection of martensite in a stainless maraging steel was investigated by electron backscattering diffraction and a new protocol of parent phase reconstruction.
Cheng-Yao Huang, Shao-Lun Lu, Hung-Wei Yen   +2 more
doaj   +1 more source

Austenite formation from a steel microstructure containing martensite/austenite and bainite bands

Journal of Materials Research and Technology, 2023
In many commercial steel processing routes, steel microstructures are reverted to an austenitic condition prior to the final processing steps. Understanding the microstructure development during austenitization is crucial for improving the performance ...
J. Abraham Mathews, J. Sietsma, R.H. Petrov, M.J. Santofimia   +3 more
doaj   +1 more source

Modeling the effect of prior austenite grain size on bainite formation kinetics

Acta Materialia, 2023
While experiments show that refining the prior austenite grain size can either accelerate or decelerate bainite formation in steels, kinetic models based on the successive nucleation of bainitic ferrite subunits can only predict an acceleration. In this work we develop a physically-based model for bainite kinetics assuming a displacive growth mechanism
Avila, Daniel dos Santos, Offerman, S. Erik, Santofimia, Maria J.   +2 more
openaire   +3 more sources

Post-Rolling Cooling Phase Transformation and Microstructure of High-Strength Anti-Seismic Rebars with Different Solute Nb and Austenite Microstructure

Metals, 2022
Three types of 20MnSiNb high-strength anti-seismic steels with different solute niobium and austenite microstructural characteristics were obtained through thermal simulation experiments which involved changing the reheating temperature and finish ...
Xing Liu, Jianchun Cao, Wei Chen, Weiqiang Zhang, Yongqing Zhang, Shubiao Yin, Aimin Guo   +6 more
doaj   +1 more source