scholarly journals An Approach to Micro Segregation Level and Presence of Quench Cracks in Medium Carbon Low Alloy Steels

2019 ◽  
Author(s):  
Cato Dybdahl ◽  
Nora Dahle ◽  
Stanka Tomovic-Petrovic
Keyword(s):  
Vacuum Arc ◽  
Low Alloy Steels ◽  
Continuous Cast ◽  
Medium Carbon ◽  
Heat Treated ◽  
Segregation Ratios ◽  
Alloy Steels ◽  
Quench Cracking ◽  
Segregation Level ◽  
The Difference

Abstract Samples from forged and heat-treated steel products with known quench crack histories have been mapped in order to study a possible relation between banding segregation and quench cracking. The steels were medium carbon low alloy steels, ingot and continuous cast, as well as vacuum arc remelt D6AC. EDS X-ray mapping was applied to characterize the banding segregation pattern from casting i.e. gradient of chemical composition that creates direction dependent properties. Trends for segregation ratios followed the expectations: the segregation ratios were higher for the quench sensitive steels.34CrNiMo6, ingot- and continuous cast, was then supplied for testing. Segregation level was pre-checked for decision for heat treatment and testing of as quenched tensile properties. There is an indication of 90 % reduction of the difference between Rm and Rp0.2, the work hardening, for the steel with lowest quality.

scholarly journals Effect of Applied Tensile Stress on the Transformation Behavior of Medium Carbon Low Alloy Steels

1991 ◽  
Vol 77 (6) ◽  
pp. 816-823
Author(s):  
Yutaka KANETSUKI ◽  
Osamu KAIDA ◽  
Masato KAISO ◽  
Masaaki KATSUMATA
Keyword(s):  
Tensile Stress ◽  
Low Alloy Steels ◽  
Transformation Behavior ◽  
Medium Carbon ◽  
Alloy Steels ◽  
Applied Tensile Stress

Microstructures and Microhardness of SNCed Medium Carbon Low Alloy Steels

2005 ◽  
pp. 137-140 ◽  
Author(s):  
Jun Bao Zhang ◽  
Yue Lian Liu ◽  
Xin Qing Zhao ◽  
J. Wu ◽  
Hong Wei Song ◽  
...  
Keyword(s):  
Low Alloy Steels ◽  
Medium Carbon ◽  
Alloy Steels

Grain size effect of austenite on the kinetics of pearlite transformation in low- and medium-carbon low-alloy steels

2015 ◽  
Vol 6 (1) ◽  
pp. 41-44 ◽  
Author(s):  
A. E. Gvozdev ◽  
A. G. Kolmakov ◽  
D. A. Provotorov ◽  
I. V. Minaev ◽  
N. N. Sergeev ◽  
...  
Keyword(s):  
Grain Size ◽  
Size Effect ◽  
Low Alloy Steels ◽  
Grain Size Effect ◽  
Medium Carbon ◽  
Alloy Steels ◽  
Kinetics Of

Effect of stress concentrations of size effect in the fatigue of medium-carbon and low-alloy steels

1980 ◽  
Vol 12 (3) ◽  
pp. 285-290 ◽  
Author(s):  
M. M. Matseiko ◽  
V. I. Pokhmurskii ◽  
G. N. Filimonov
Keyword(s):  
Size Effect ◽  
Low Alloy Steels ◽  
Stress Concentrations ◽  
Medium Carbon ◽  
Alloy Steels

Erratum to: Interrelation of Steel Composition, Hardening Route, and Tempering Response of Medium Carbon Low-Alloy Steels

2016 ◽  
Vol 25 (11) ◽  
pp. 5125-5125 ◽  
Author(s):  
Abdel-Hamid A. Hussein ◽  
Mahmoud T. Abdu ◽  
El-Sayed M. El-Banna ◽  
Saied E. Soliman ◽  
Mahmoud M. Tash
Keyword(s):  
Low Alloy Steels ◽  
Steel Composition ◽  
Medium Carbon ◽  
Alloy Steels

Relationship between the Microstructure of the Welded Steel Plates and the Efficiency of Vibration Stress Relief

2014 ◽  
Vol 941-944 ◽  
pp. 2062-2065
Author(s):  
Shu Qi Li ◽  
Hong Yuan Fang ◽  
Xue Song Liu ◽  
Wei Cui
Keyword(s):  
Residual Stress ◽  
Stress Relief ◽  
Steel Plates ◽  
Low Alloy Steels ◽  
Welded Steel ◽  
Welded Structures ◽  
Vibration Stress ◽  
Alloy Steels ◽  
The Difference ◽  
Main Factor

Welded components of low alloy steels are widely used in various applications. Stress reliving is very important to these welded structures. Vibration stress relief (VSR) is an relatively new method for this purpose. In this study, Q235 and Q345 steel plates were welded. Then they were treated by VSR. The microstructure of the welded lines were investigated and the residual stresses in two directions in these welded structures were measured. The difference of the efficiency of VSR on the two materials were investigate. It is found that, the decreasing amplitude of the residual stress in the Q235 welded structures significantly exceeded that in the Q345 welded structures. The grain size in the area near the weld lines is the main factor that affects the efficiency of the VSR treatment.

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