Austenite grain coarsening in low–carbon manganese steels containing niobium and aluminium

1985 ◽  
Vol 1 (11) ◽  
pp. 950-953 ◽  
Author(s):  
N. Shams
Keyword(s):  
Low Carbon ◽  
Grain Coarsening ◽  
Austenite Grain ◽  
Carbon Manganese Steels ◽  
Manganese Steels

Effect of Particular Combinations of Quenching, Tempering and Carburization on Abrasive Wear of Low-Carbon Manganese Steels with Metastable Austenite

2019 ◽  
Vol 945 ◽  
pp. 574-578 ◽  
Author(s):  
L.S. Malinov ◽  
I.E. Malysheva ◽  
E.S. Klimov ◽  
V.V. Kukhar ◽  
E.Y. Balalayeva
Keyword(s):  
Wear Resistance ◽  
Abrasive Wear ◽  
Residual Austenite ◽  
Abrasive Wear Resistance ◽  
Low Carbon ◽  
Metastable Austenite ◽  
Carbon Manganese Steels ◽  
The Impact ◽  
Manganese Steels ◽  
Dynamic Ratio

The effect of quenching from 900°C (20 min exposure) and different tempering in the 250-650°C (for 1 hour) interval, as well as additionally preliminary carburization for 8 hours at 930°C, followed by a similar heat treatment on abrasive and shock-abrasive wear of low-carbon manganese (10-24%Mn) steels, phase composition and mechanical properties was studied. It was confirmed that an increase in the manganese reduces the abrasive wear resistance and increases the impact-abrasive wear resistance. The expediency of carburization of low-carbon manganese steels is shown in order to obtain the residual austenite in the structure which amount and stability must be optimized in relation to specific abrasive impact characterized by the dynamic ratio with taking into account the chemical composition.

Low carbon manganese steels microalloyed with vanadium and nitrogen

1998 ◽  
Vol 69 (8) ◽  
pp. 334-342 ◽  
Author(s):  
Mamdouh Eissa ◽  
Kamal EI-Fawakhry ◽  
Mohamed Mekkawy ◽  
Abdul Hamid Hussein ◽  
Ahmed Tawfik
Keyword(s):  
Low Carbon ◽  
Carbon Manganese Steels ◽  
Manganese Steels

Low-carbon manganese steels with vanadium carbonitrides

1974 ◽  
Vol 16 (11) ◽  
pp. 908-912
Author(s):  
A. P. Gulyaev ◽  
V. N. Nikitin ◽  
Ya. M. Akhundov
Keyword(s):  
Low Carbon ◽  
Carbon Manganese Steels ◽  
Manganese Steels

scholarly journals Micro-structure Refinement in Low Carbon High Manganese Steels through Ti-deoxidation: Austenite Grain Growth and Decomposition

2009 ◽  
Vol 49 (7) ◽  
pp. 1036-1045 ◽  
Author(s):  
Naoki Kikuchi ◽  
Seiji Nabeshima ◽  
Yasuo Kishimoto ◽  
Yasuhide Ishiguro ◽  
Seetharaman Sridhar
Keyword(s):  
Grain Growth ◽  
Structure Refinement ◽  
Low Carbon ◽  
Micro Structure ◽  
High Manganese ◽  
Austenite Grain ◽  
High Manganese Steels ◽  
Austenite Grain Growth ◽  
Manganese Steels

Effects of Chromium and Nickel Additions on the Austenite Grain Coarsening of Low Carbon Structural Steels Containing 0.13% C

2016 ◽  
Vol 860 ◽  
pp. 152-157 ◽  
Author(s):  
Mohiuddin Ahmed ◽  
Md Mohar Ali Bepari ◽  
Roisul Hasan Galib
Keyword(s):  
Grain Size ◽  
Chromium Carbide ◽  
Structural Steels ◽  
Low Carbon ◽  
Austenite Grain Size ◽  
Grain Coarsening ◽  
Austenite Grain ◽  
Nickel Particles ◽  
Coarsening Behavior ◽  
Increasing Temperature

The austenite grain coarsening behavior of low carbon (0.13% C) structural steels containing chromium and nickel singly or in combination were studied by heating the steels at successive high temperature in the austenite zone in the temperature range of 900-1100°C with an interval of 50°C. The carburizing technique has been adopted to reveal the prior austenite grain boundaries and mean linear intercept method was used to measure the austenite grain size.It was found that on heating the undissolved particles of chromium carbide, Cr2C refine the austenite grain size at temperature below 1000°C, but the effect decreases with increasing temperature. Nickel does not produce any austenite grain refinement. In the presence of nickel particles of chromium carbide are less effective than chromium carbide particles in the absence of nickel in the refinement of austenite grain size.

Influence of Cooling Path on the Dynamic Transformation of Austenite-to-Ferrite in Low Carbon Manganese Steels

2014 ◽  
Vol 1019 ◽  
pp. 333-338
Author(s):  
Jerry Chika Oguh ◽  
Charles Siyasiya ◽  
Waldo E. Stumpf
Keyword(s):  
Driving Force ◽  
Dual Phase ◽  
Low Carbon ◽  
Transformation Temperatures ◽  
Thermomechanical Process ◽  
Cooling Path ◽  
Dynamic Transformation ◽  
Carbon Manganese Steels ◽  
Control Knowledge ◽  
Manganese Steels

For an effective thermomechanical process control, knowledge of the start and finish temperatures of the austenite transformation is critical. Continuous Cooling uniaxial-Tension (CCT*) is a useful way to measure these values. Therefore, the dynamic transformation of austenite to ferrite (γ → α) was investigated in C-Mn steels to understand the hot ductility behaviour of these steels after varying the cooling paths i.e. simulating “hard” and “soft” cooling rates of the strand during continuous casting. Results show that hard cooling into the dual phase (γ + α) region significantly increases the dynamic transformation temperatures due to a higher driving force owing to double transformation and precipitation of AlN during the process. A comparison of dynamic versus static transformation (Ar3 and Ar1) temperatures and equilibrium transformation temperatures gives a better understanding of the contribution of strain to transformation during casting or hot deformation.

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