Effect of ferrite grain size on susceptibility to embrittlement of low-carbon steels

1974 ◽  
Vol 10 (4) ◽  
pp. 458-459
Author(s):  
Yu. A. Shul'te ◽  
G. G. Maksimovich ◽  
F. P. Yanchishin ◽  
V. N. Fedirko
Keyword(s):  
Grain Size ◽  
Carbon Steels ◽  
Low Carbon ◽  
Low Carbon Steels ◽  
Ferrite Grain Size

Effect of Zr Microalloying on Austenite Grain Size of Low-Carbon Steels

2019 ◽  
Vol 50 (6) ◽  
pp. 2574-2585 ◽  
Author(s):  
Minghao Shi ◽  
Rangasayee Kannan ◽  
Jian Zhang ◽  
Xiaoguang Yuan ◽  
Leijun Li
Keyword(s):  
Grain Size ◽  
Carbon Steels ◽  
Low Carbon ◽  
Austenite Grain Size ◽  
Low Carbon Steels ◽  
Austenite Grain

Effect of Hot Band Grain Size on the Anisotropy of Warm Rolled Low Carbon Steels

2005 ◽  
pp. 787-794
Author(s):  
M. Sánchez-Araiza ◽  
Stéphane Godet ◽  
Pascal J. Jacques ◽  
John J. Jonas
Keyword(s):  
Grain Size ◽  
Carbon Steels ◽  
Low Carbon ◽  
Low Carbon Steels ◽  
Hot Band

Application of the acoustic resonance method to evaluate the grain size of low carbon steels

1999 ◽  
Vol 32 (2) ◽  
pp. 85-89 ◽  
Author(s):  
Bongyoung Ahn ◽  
Seung Seok Lee ◽  
Soon Taik Hong ◽  
Ho Chul Kim ◽  
Suk-Joong L. Kang
Keyword(s):  
Grain Size ◽  
Resonance Method ◽  
Acoustic Resonance ◽  
Carbon Steels ◽  
Low Carbon ◽  
Low Carbon Steels

scholarly journals Effect of Austenite Grain Size on the Morphology and Crystallography of Lath Martensite in Low Carbon Steels

2005 ◽  
Vol 45 (1) ◽  
pp. 91-94 ◽  
Author(s):  
S. MORITO ◽  
H. SAITO ◽  
T. OGAWA ◽  
T. FURUHARA ◽  
T. MAKI
Keyword(s):  
Grain Size ◽  
Lath Martensite ◽  
Carbon Steels ◽  
Low Carbon ◽  
Austenite Grain Size ◽  
Low Carbon Steels ◽  
Austenite Grain

The Influence of Oxide Inclusion on Austenite Grain Size and Heat Affected Zone Toughness for Low Carbon Steels

2012 ◽  
Vol 715-716 ◽  
pp. 617-622 ◽  
Author(s):  
Wei Shu ◽  
Xue Min Wang ◽  
Cheng Jia Shang ◽  
Xin Lai He
Keyword(s):  
Grain Size ◽  
Heat Affected Zone ◽  
Acicular Ferrite ◽  
Oxide Inclusion ◽  
Thermal Simulation ◽  
Carbon Steels ◽  
Low Carbon ◽  
Austenite Grain Size ◽  
Low Carbon Steels ◽  
Austenite Grain

The low carbon steels were smelted with special oxide introduction technique and the HAZ properties has been studied with thermal simulation. The optical microscope, SEM and TEM were used to analyze the composition, size and distribution of the inclusions, and the mechanical properties after thermal simulation were also investigated. The influence of oxide inclusions on the austenite grain size was also studied. The results show that after the smelting the inclusion is complex, in the core is Ti oxides about 1-3 micron and around it is MnS. When the reheat temperature is below 1000, the size of austenite grain is the same for experimental steel and base steel. However, when the reheat temperature is over than 1100, the size of austenite grains in experimental steel is one third of that in base steels. After thermal simulation, with thet8/5increasing the toughness of HAZ decreased. The austnite grain size also increased. The microstructure is composed of intergranular ferrite and intragranular acicular ferrite. Therefore by introducing the fine oxide inclusion to the steel the austenite grain was refined and during the phase transformation the acicular ferrite formed at inclusions at first. These two factors are the main causes to improve the toughness of heat affected zone for steels produced by oxide metallurgy technique.

Laser-Ultrasonic Austenite Grain Size Measurements in Low-Carbon Steels

2012 ◽  
Vol 715-716 ◽  
pp. 407-414
Author(s):  
Matthias Militzer ◽  
Mehran Maalekian ◽  
André Moreau
Keyword(s):  
Grain Size ◽  
Carbon Steels ◽  
Laser Ultrasonics ◽  
Mechanical Processing ◽  
Low Carbon ◽  
Laser Ultrasonic ◽  
Austenite Grain Size ◽  
Low Carbon Steels ◽  
Austenite Grain

Austenite grain size is an important microstructure parameter when processing steels as it provides the initial condition for the austenite decomposition that determines the final microstructure and thus properties of the steel. In low-carbon steels it is frequently difficult if not impossible to quantify the austenite grain size using conventional metallographic techniques. Laser-ultrasonics provides an attractive alternative to quantify the grain size in-situ during thermo-mechanical processing of a steel sample. The attenuation of the laser generated ultrasound wave is a function of the grain size. The present paper gives an overview on the state-of-the-art of this novel measurement technique. Using isothermal and non-isothermal grain growth tests in low-carbon steels the advantages and limitations of laser-ultrasonic measurements will be demonstrated. Further, their application for deformed samples will be presented to quantify austenite grain sizes during and after recrystallization. The in-situ measurements provide significantly new insights into the austenite microstructure evolution during thermo-mechanical processing of low-carbon steels. The implications on expediting the development of improved process models will be discussed.

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