Results 21 to 30 of about 5,500,584 (177)

Effect of alloying elements on austenite grain growth and microstructure refinement in a non-quenched steel for crankshafts

工程科学学报, 2015
The microstructural refinement effect of alloying elements Nb, Ti and S was investigated by analyzing austenite grain growth behavior and hot-rolled microstructure in a non-quenched steel for crankshafts.
ZHANG Chao-lei, YANG Zhong, SUN Jing-hong, ZHAO Hai-dong, LI Bo-yuan, LIU Ya-zheng   +5 more
doaj   +1 more source

Phase-field simulation of austenite reversion in a Fe-9.6Ni-7.1Mn (at.%) martensitic steel governed by a coupled diffusional/displacive mechanism

Materials & Design, 2020
Microstructural features of austenite formation, including the growth morphologies and partitioning of alloying elements, during reverse transformation in a Fe-9.6Ni-7.1Mn (at.%) martensitic steel have been studied by phase field modelling with a coupled
Xing Zhang, Gang Shen, Chuanwei Li, Jianfeng Gu   +3 more
doaj   +1 more source

Prediction of austenite grain growth during austenitization of a 0.7%C pearlitic rail steel [PDF]

, 2021
The prior austenite grain size of steels greatly influences the phase transformation kinetics during austenitization and the microstructure which determines the mechanical properties.
Annan, Kofi Ahomkah, Mostert, Roelf Johannes, Siyasiya, Charles Witness, Khanyema, Simphiwe, Moema, Joseph   +4 more
core   +1 more source

Grain Growth during Mechanical Processing of Austenitic Stainless Steel AISI 321

Metals, 2023
The kinetics of austenite grain growth during thermomechanical treatment of AISI 321 steel with a relatively high content of carbon (0.07 wt. %) and titanium (0.50 wt. %) were studied.
Liudmila V. Radionova, Danil V. Perevozchikov, Aleksandr N. Makoveckii, Victor N. Eremin, Alexander M. Akhmedyanov, Sergey V. Rushchits   +5 more
doaj   +1 more source

Analytical Modeling and Computer Simulation of the Transformation of Ellipsoids Nucleated on Random Parallel Planes [PDF]

Materials Research, 2020
A considerable number of engineering materials is polycrystalline. Cahn proposed analytical expressions for transformations nucleated at the grain faces, triple junctions, and quadruple junctions.
Gabriella Maria Silveira de Sá, Harison da Silva Ventura, Weslley Luiz da Silva Assis, Elena Villa, Paulo Rangel Rios   +4 more
doaj   +1 more source

Precipitation Criterion for Inhibiting Austenite Grain Coarsening during Carburization of Al-Containing 20Cr Gear Steels

Metals, 2021
AlN precipitates are frequently adopted to pin the austenite grain boundaries for the high-temperature carburization of special gear steels. For these steels, the grain coarsening criterion in the carburizing process is required when encountering the ...
Huasong Liu, Yannan Dong, Hongguang Zheng, Xiangchun Liu, Peng Lan, Haiyan Tang, Jiaquan Zhang   +6 more
doaj   +1 more source

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.
Dezhi Li, Xianming Zhao, Hongliang Zhang, Jie Li, Huaibin Han   +4 more
doaj   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Study on the Austenite Grain Growth Behavior of Fe-Mn-Al-C Low-Density Steel Containing Niobium

Metals
To explore the impact of niobium (Nb) addition on the austenitization behavior of Fe-Mn-Al-C lightweight steels, the effects were examined through Thermo-Calc thermodynamic simulations, optical microscopy, transmission electron microscopy (TEM), and the ...
Litu Huo, Tao Ma, Weimin Gao, Yungang Li, Haichao Zhang, Jianxin Gao   +5 more
doaj   +1 more source

Distinct Microstructural Characteristic Lengths Defining Notch Fatigue Crack Initiation and Propagation, and Defect Tolerance in Advanced Steels

Advanced Engineering Materials, EarlyView.
Schematic representation of modes of microcrack nucleation, growth and temporary arrestment at different boundaries, with the criteria for crack propagation in three scenarios: (1) large notch, (2) defect/small sharp notch, and (3) long crack. This work revisits and integrates results on the fatigue behavior of advanced bainitic steels (in particular ...
Lucia Morales‐Rivas
wiley   +1 more source