Results 11 to 20 of about 645 (118)

Microstructure Refinement by Low-Temperature Ausforming in an Fe-Based Metastable High-Entropy Alloy

Metals, 2021
The effects of ausforming in an Fe30Mn10Cr10Co high-entropy alloy on the microstructure, hardness, and plastic anisotropy were investigated. The alloy showed a dual-phase microstructure consisting of face-centered cubic (FCC) austenite and hexagonal ...
Motomichi Koyama, Takeaki Gondo, Kaneaki Tsuzaki   +2 more
doaj   +3 more sources

Effect of Ausforming Temperatures on Bainitic Transformation During Isothermal Quenching of 42CrMo Steel

Metals
The influence of ausforming temperature on the isothermal bainitic transformation behavior of 42CrMo steel was systematically investigated using thermo-mechanical simulation, dilatometric analysis, and electron backscatter diffraction (EBSD). The results
Jianxin Cao, Bainian Li, Ying Bai, Zhenjiang Li   +3 more
doaj   +3 more sources

Effect of the ausforming deformation mode on bainitic transformation in a medium carbon high silicon steel

Journal of Materials Research and Technology, 2022
Ausforming treatments are thermomechanical treatments that consist in plastically deforming a fully austenitized steel, usually leading to either a bainitic or a martensitic microstructure.
Adriana Eres-Castellanos, Muftah Zorgani, Davood Shahriari, Radu Romanica, Jose Antonio Jimenez, Carlos Garcia-Mateo, Mohammad Jahazi   +6 more
doaj   +3 more sources

Improving strength and ductility via ausforming combined with austempering through deformation-induced bainite refinement

Journal of Materials Research and Technology
The refinement of bainitic ferrite laths is one of the most critical ways to improve the combination of strength and ductility. However, low-temperature bainitic transformations in the microstructural evolution of carbide-free bainite in high-carbon ...
Jianhua Li, Peng Chen, Ning Xu, Dapeng Yang, Hongshuang Di, Hongliang Yi   +5 more
doaj   +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   +3 more sources

The role of ausforming in the stability of retained austenite in a medium-C carbide-free bainitic steel

Journal of Materials Research and Technology, 2020
In this work, the influence of thermomechanical treatments, consisting of a combination of ausforming followed by isothermal holding and cooling to room temperature, on the stability of retained austenite of a carbide-free medium carbon-high silicon ...
M. Zorgani, Carlos Garcia-Mateo, M. Jahazi   +2 more
doaj   +3 more sources

Crystallographic characterization of steel microstructure using neutron diffraction [PDF]

Science and Technology of Advanced Materials, 2019
Applications of neutron diffraction to microstructure evaluation of steel investigated by a project commissioned by the Innovative Structural Materials Association are summarized.
Yo Tomota
doaj   +2 more sources

The combining effects of ausforming and below-Ms or above-Ms austempering on the transformation kinetics, microstructure and mechanical properties of low-carbon bainitic steel

Materials & Design, 2019
The isothermal transformation kinetics, microstructure and mechanical properties of a low-carbon bainitic steel, subjected to below-Ms/above-Ms austempering with or without prior ausforming, have been investigated via dilatometric measurements ...
Leijie Zhao, Lihe Qian, Qian Zhou, Dongdong Li, Tongliang Wang, Zhigeng Jia, Fucheng Zhang, Jiangying Meng   +7 more
doaj   +2 more sources

Effect of two-step ausforming on bainite transformation and retained austenite in a medium-carbon bainitic steel

Materials Research Express, 2020
It is commonly accepted that single ausforming with small strain at low temperature promotes isothermal bainite transformation and leads to more retained austenite.
Guanghui Chen, Guang Xu, Haijiang Hu, Junyu Tian, Qing Yuan, Jun Wang   +5 more
doaj   +2 more sources

Corner Strengthening by Local Thickening and Ausforming Using Planar Compression in Hot Stamping of Ultra-High Strength Steel Parts

Metals, 2021
Hot-stamped products are widely used for the body-in-white of an automobile as they are lightweight and improve crashworthiness. A hot-stamping process using planar compression was developed to strengthen corners of ultra-high strength parts by local ...
Tomoyoshi Maeno, Ken-ichiro Mori, Hiroki Homma, Ali Talebi-Anaraki, Ryohei Ikeda   +4 more
doaj   +2 more sources