Results 1 to 10 of about 151 (123)

Effect of Two-Step Austempering Process on Transformation Kinetics of Nanostructured Bainitic Steel [PDF]

Materials, 2019
The two-step austempering process has been reported to be an effective method to accelerate the bainitic transformation process by introducing martensite (Q-M-B). However, in this study, it was found that the Q-M-B process reduced the incubation time, but the transformation duration remained nearly unchanged.
Zhinan Yang, Xiaoyan Long, Yang Zhinan   +2 more
exaly   +5 more sources

Enhancement of Balance in Strength, Ductility, and Stretch Flangeability by Two-Step Austempering in a 1000 MPa Grade Cold Rolled Bainitic Steel [PDF]

Metals, 2021
The microstructural evolution and properties for varied austempering routes are investigated in a cold-rolled bainitic steel. Special attention is given to the effect of retained austenite (RA) in terms of its fraction, carbon concentration, and ...
Shuai Tang, Huifang Lan, Zhenyu Liu, Guodong Wang   +3 more
doaj   +4 more sources

Microstructure and mechanical properties of two-step Cu-alloyed ADI treated by different second step austempering temperatures and times [PDF]

China Foundry, 2019
Austempering ductile iron (ADI) is an attractive material due to its excellent comprehensive mechanical properties. However, the deficit in elongation and toughness always threatens its security application.
Peng-yue Yi, Er-jun Guo, Li-ping Wang
doaj   +5 more sources

Microstructure and mechanical behaviors of grinding balls produced by dual matrix structure two-step austempering process

Journal of Materials Research and Technology, 2020
The austempered ductile iron (ADI) grinding balls were austenitized at 900 °C for 2 h and then incomplete quenched in a sodium silicate solution for 100 s, after that austempered in an isothermal furnace at 230 °C for 1 h.
Hongyu Zhou, phD, Yaqiang Li, phD, Zheng Yin, Master, Minrui Ran, phD, Shibin Liu, phD, Ying Huang, Master, Weidong Zhang, phD, Wenyue Zheng, phD, Junyou Liu, phD   +8 more
doaj   +4 more sources

Effects of two-step austempering processes on the wear resistance and fatigue lifetime of high-carbon nanostructured bainitic steel

Journal of Materials Research and Technology
The previous research on two-step austempering processes have been mainly focused on the bainitic transformation kinetics, with few details the relationships between the parameters of two-step austempering process and the wear properties and fatigue ...
Dongyun Sun, Xiaoyong Feng, Peng Zhang, Xiaowen Sun, Zhinan Yang, Xiaoyan Long, Fucheng Zhang   +6 more
doaj   +4 more sources

Effect of Multi-Step Austempering Treatment on the Microstructure and Mechanical Properties of a High Silicon Carbide-Free Bainitic Steel with Bimodal Bainite Distribution

Metals, 2021
The effect of multi-step austempering treatments on the microstructure and mechanical properties of a novel medium carbon high silicon carbide-free bainitic steel was studied.
Mattia Franceschi, Alvise Miotti Bettanini, Luca Pezzato, Manuele Dabalà, Pascal J. Jacques   +4 more
doaj   +3 more sources

Microstructural and mechanical properties of Cu-Ni-Mn-Mo austempered ductile iron obtained from two-step hot air austempering

Journal of Materials Research and Technology, 2020
In the present work, mechanical and microstructural properties of Austempered Ductile Iron (ADI) alloyed with Cu-Ni-Mn-Mo submitted to different hot air austempering cycles in a two-step mechanism were evaluated.
Leonardo Pereira, Regis Fabiano do Amaral, Mario Wolfart, Júnior, Vinicius Karlinski de Barcellos   +3 more
doaj   +2 more sources

Effect of Cu content on microstructures and mechanical properties of ADI treated by twostep austempering process [PDF]

China Foundry, 2019
The effect of Cu content on the microstructures and mechanical properties (yield strength, ultimate tensile strength, impact energy, fracture toughness) of austempering ductile iron (ADI) treated by two-step austempering process were investigated. High
Peng-yue Yi, Er-jun Guo, Li-ping Wang
doaj   +3 more sources

Fatigue crack growth behavior of nodular cast iron subjected to two-step austempering

Metalurgija, 2018
This research aimed to investigate the fatigue crack behaviorof nodular cast iron heat-treated with two-step austempering. In this study, the material was initially reheated at 260 °C for 10 minutes, and then the temperature was increased to 280 °C, 310 °
Andoko, P. Puspitasari, F. Gapsari
doaj   +3 more sources

The Effect of Two-Step Austempering Temperature and Copper Addition on the Microstructure and Mechanical Properties of ADI

مواد نوین
This study investigated the influence of copper addition and two-step austempering temperature on the microstructure, phase fractions, and mechanical properties of austempered ductile iron (ADI).
Mehdi Ghorbani Jamal-Abadi, Amir Abedi, Soroush Parvizi, Mina Safa, Saloumeh Mesgari Abbasi, Gholamreza Khalaj   +5 more
doaj   +2 more sources