Results 191 to 200 of about 467,100 (247)

Excess Carbon Enrichment in Austenite During Intercritical Annealing

Metallurgical and Materials Transactions A, 2013
Carbon enrichment in the austenite transformed from martensite during intercritical annealing was measured by electron probe microanalyzer and three-dimensional atom probe microscopy in Fe-2Mn-0.3C and Fe-0.35C alloys. At early stages of the transformation, negligible Mn partitioning occurs, and carbon content in austenite is higher than ...
Zhen-Qing Liu, Goro Miyamoto, Zhi-Gang Yang, Tadashi Furuhara   +3 more
openaire   +1 more source

Effect of intercritical annealing temperature on multiphase microstructure evolution in ultra-low carbon medium manganese steel

Materials Characterization, 2021
The effect of intercritical annealing temperature (IAT) on the multiphase microstructure evolution of 0.02C-7Mn steel was investigated using scanning electron microscopy (SEM), electron backscattered diffraction (EBSD), X-ray diffraction (XRD), and ...
Gang Liu, Ba Li, Shuai Xu, S. Tong, Xin Wang, Xi Liang, Xinjun Sun   +6 more
semanticscholar   +1 more source

Morphology and crystallography of austenite formed during intercritical annealing

Metal Science, 1984
AbstractThe formation of austenite during intercritical annealing of ferrite–spheroidized cementite and ferrite–pearlite microstructures in low carbon steels has been investigated. It has been established that austenite which nucleates at a ferrite grain boundary does so with a Kurdjumov–Sachs crystallographic orientation relationship with one or both ...
U. R. Lenel, R. W. K. Honeycombe
openaire   +1 more source

Improved strength-ductility-toughness balance of a precipitation-strengthened low-carbon medium-Mn steel by adopting intercritical annealing-tempering process

, 2021
The present study on low-carbon medium-Mn steel demonstrates that the newly proposed “intercritical annealing-tempering” process led to good combination of strength, ductility and impact toughness, by simultaneously optimizing austenite reverted ...
Y. Zou, Yunbo Xu, G. Wang, Y. Han, H. Teng, D. Han, M. Qiu, F. Yang, R. Misra   +8 more
semanticscholar   +1 more source

Based on the Thermomechanical Control Process–Ultrafast Cooling–Intercritical Annealing and Tempering Process: Effect of Intercritical Annealing Temperature on the Microstructure and Mechanical Properties of Cr‐Alloyed 5.5% Ni Steels

Steel Research International
An innovative process (thermomechanical control process–ultrafast cooling–intercritical annealing and tempering, TMCP‐UFC‐IAT) is used to prepare 5.5% Ni steel.
Yang Sun, Zhonglin Wu, Pengjie Wang, Yifan Ji, Si-Wei Wu, Deng Luo, Houxin Wang, Guang-ming Cao, Zhen-yu Liu   +8 more
semanticscholar   +1 more source

Thermodynamic Characterization in Intercritical Annealing Process for Dual-Phases Steels

Advanced Materials Research, 2012
The theoretical prediction of chemical composition, the range of main elements and austenite alteration affected by intercritical annealing temperature were conducted by thermodynamic calculations, which agree with the experimental results. When fixing carbon content at 0.1% and calculating temperature at 1000K, to achieve α+γ phases without cementite ...
Fang Fang, Hui Wang, Yun Yang Yin, Cheng Jiang Lin   +3 more
openaire   +1 more source

Mechanical Properties of Intercritically Annealed X80 Line Pipe Steels

Metallurgical and Materials Transactions A, 2021
Microalloyed low-carbon steels are used for line pipe applications as they combine high strength and acceptable fracture toughness with good weldability. During multi-pass welding, the strength and impact toughness of the material in the heat-affected zone (HAZ) is potentially degraded, in particular the regions where the thermal fields from multi-pass
Madhumanti Mandal, Warren Poole, Matthias Militzer, Laurie Collins   +3 more
openaire   +1 more source

Microstructural characterization and impact toughness of intercritically annealed PM steels

Materials Science and Engineering: A, 2005
Abstract In this study, atomized iron powder (Ancorsteel 1000) was mixed with 0.3 and 0.5 wt.% graphite powder. After sintering at 1120 °C, coarse and fine ferrite and martensite (dual phase) microstructures were produced through intercritical annealing heat treatment at different temperatures.
Tekeli, SÜLEYMAN, Gural, AHMET
openaire   +2 more sources

Effect of Annealing Temperature on Martensite Start Temperature in Intercritical Region

2015
In dual-phase steels, partial austenization may result in different volume amount of austenite depending on intercritical annealing temperature between Ac1 and Ac3 temperatures. The annealing temperature is also responsible of chemical composition and grain size of austenite. This study deals with the effect of intercritical annealing temperature on Ms
ERİŞİR, ERSOY, BİLİR, OĞUZ GÜRKAN
openaire   +2 more sources

Microstructural characterization of intercritically annealed low alloy PM steels

Materials & Design, 2007
In this study, the applicability of intercritical annealing heat treatment, which is usually practiced to high strength low alloy ingot steels (HSLA), to low alloy powder metallurgy (PM) processed steels was investigated. With this heat treatment, it was intended to produce a dual-phase steel structure (ferrite + martensite) in PM steel.
Tekeli, SÜLEYMAN, Gural, AHMET
openaire   +2 more sources