Results 21 to 30 of about 297 (137)

Flow Stress Behaviour and Static Recrystallization Characteristics of Hot Deformed Austenite in Microalloyed Medium-Carbon Bainitic Steels

Metals, 2021
In the past decade, efforts have been focused on developing very fine, medium-carbon bainitic steels via the low-temperature (typically 300–400 °C) ausforming process, which not only enables shorter isothermal holding times for bainitic transformation at
Pentti M. Kaikkonen, Mahesh C. Somani, Leo Pentti Karjalainen, Jukka I. Kömi   +3 more
doaj   +2 more sources

Influence of Ausforming on Hardenability of Steel 09MnNb for L485QS Sour Sevice Pipeline

Teshugang, 2019
To study the effect of ausforming on hardenability in steel 09MnNb used for L485QS sour service pipeline, different ausforming processes were performed and the subsequent hardenabilitis and microstructures were tested.
方剑, 黄彦, 唐应波
doaj   +1 more source

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   +2 more sources

Effect of low-temperature ausforming on hydrogen-induced delayed fracture of high-strength bolt steel [PDF]

工程科学学报
High-strength bolts are widely used in construction machinery, steel structures, bridges, automobiles, and other industrial sectors owing to their high load-bearing capacity and connection efficiency.
Yixuan XU, Weijun HUI, Boyang FANG, Zhuo HUA, Yongjian ZHANG, Xiaoli ZHAO   +5 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   +1 more source

Effect of Ausforming on Retained Austenite After Continuous Cooling Transformation in a Medium-Carbon High Strength Steel [PDF]

Materials Research, 2020
The effects of deformation on transformation kinetics during continuous cooling and microstructure evolution of a medium carbon high strength steel were investigated by metallographic method, dilatometry and X-ray diffraction etc.
Man Liu, Guang Xu, Xin Chen, Zhenye Chen, Ziliu Xiong   +4 more
doaj   +1 more source

Analysis on the Key Parameters to Predict Flow Stress during Ausforming in a High-Carbon Bainitic Steel

Metals, 2023
Since flow stress is an important parameter in the processing and application of metallic materials, it is necessary to trace the flow stress during austenite deformation. Thermal compression deformation of austenite in a high-strength bainitic steel was
Lifan Wang, Haijiang Hu, Wei Wang, Ping He, Zhongbo Li, Guang Xu   +5 more
doaj   +1 more source

Creep strength boosted by a high-density of stable nanoprecipitates in high-chromium steels

European Journal of Materials, 2023
There is a need worldwide to develop materials for advanced power plants with steam temperatures of 700°C and above that will achieve long-term creep-rupture strength and low CO2 emissions.
Javier Vivas, David De-Castro, Jonathan D. Poplawsky, Eberhard Altstadt, Martin Houska, Esteban Urones-Garrote, David San-Martín, Francisca G. Caballero, Marta Serrano, Carlos Capdevila   +9 more
doaj   +1 more source

Study of the effect of ausforming treatment on the microstructure of a high silicon carbide-free bainitic steel [PDF]

, 2022
openIl seguente studio vuole proporre un’analisi dettagliata sull’effetto del trattamento di Ausforming, un procedura utilizzata principalmente per migliorare proprietà meccaniche degli acciai come durezza e tenacità.
DALLA VIA, MATTEO
core  

Tempforming as an Advanced Processing Method for Carbon Steels

Metals, 2020
The microstructural mechanisms providing delamination toughness in high-strength low-alloyed steels are briefly reviewed. Thermo-mechanical processing methods improving both the strength and impact toughness are described, with a close relation to the ...
Anastasiya Dolzhenko, Rustam Kaibyshev, Andrey Belyakov   +2 more
doaj   +1 more source