Thermomechanical treatment of steel in the process of isothermal transformation of supercooled austenite

1967 ◽  
Vol 9 (4) ◽  
pp. 317-319
Author(s):  
S. M. Baranov ◽  
S. I. Karatushin
Keyword(s):  
Thermomechanical Treatment ◽  
Isothermal Transformation ◽  
Supercooled Austenite

Isothermal transformation of supercooled austenite in steel 75KhSMF

1972 ◽  
Vol 14 (1) ◽  
pp. 75-76
Author(s):  
M. V. Gedeon ◽  
I. V. Paisov ◽  
V. S. Tomsinskii ◽  
S. P. Ponomareva
Keyword(s):  
Isothermal Transformation ◽  
Supercooled Austenite

Isothermal transformation of supercooled austenite in high-speed steel �P733

1973 ◽  
Vol 15 (11) ◽  
pp. 942-943
Author(s):  
A. N. Popandopulo ◽  
M. E. Mormuleva ◽  
L. I. Kopenina
Keyword(s):  
High Speed ◽  
High Speed Steel ◽  
Isothermal Transformation ◽  
Supercooled Austenite

Thermomechanical Treatment of a 4340 Ni-Cr-Mo Alloy Steel

1981 ◽  
Vol 39 ◽  
pp. 314-315 ◽  
Author(s):  
M.T. Jahn ◽  
J.C. Yang ◽  
C.M. Wan
Keyword(s):  
Mechanical Property ◽  
Chemical Composition ◽  
Alloy Steel ◽  
Thermomechanical Treatment ◽  
Room Temperature ◽  
Good Combination ◽  
Thermal Treatments ◽  
Low Carbon ◽  
4340 Steel ◽  
Good Improvement

4340 Ni-Cr-Mo alloy steel is widely used due to its good combination of strength and toughness. The mechanical property of 4340 steel can be improved by various thermal treatments. The influence of thermomechanical treatment (TMT) has been studied in a low carbon Ni-Cr-Mo steel having chemical composition closed to 4340 steel. TMT of 4340 steel is rarely examined up to now. In this study we obtain good improvement on the mechanical property of 4340 steel by TMT. The mechanism is explained in terms of TEM microstructures4340 (0.39C-1.81Ni-0.93Cr-0.26Mo) steel was austenitized at 950°C for 30 minutes. The TMTed specimen (T) was obtained by forging the specimen continuously as the temperature of the specimen was decreasing from 950°C to 600°C followed by oil quenching to room temperature. The thickness reduction ratio by forging is 40%. The conventional specimen (C) was obtained by quenching the specimen directly into room temperature oil after austenitized at 950°C for 30 minutes. All quenched specimens (T and C) were then tempered at 450, 500, 550, 600 or 650°C for four hours respectively.

EFFECT OF THERMOMECHANICAL TREATMENT ON TOUGHENING OF Al-Li-Cu-Mg-Zr ALLOY AND ITS TOUGHNESS

1987 ◽  
Vol 48 (C3) ◽  
pp. C3-653-C3-659 ◽  
Author(s):  
M. NIINOMI ◽  
K. DEGAWA ◽  
T. KOBAYASHI
Keyword(s):  
Thermomechanical Treatment ◽  
Zr Alloy

Effect of the Thermomechanical Treatment on the Springback During a Forming

2015 ◽  
Vol 6 (3) ◽  
pp. 65
Author(s):  
E. H. Ouakdi ◽  
A. Soualem ◽  
T. Rechidi ◽  
M. Martiny ◽  
G. Ferron
Keyword(s):  
Thermomechanical Treatment

Isothermal transformation behavior of thermally-grown wüstite

2000 ◽  
Vol 17 (2) ◽  
pp. 311-319 ◽  
Author(s):  
B. Gleeson ◽  
S.M.M. Hadavi ◽  
D.J. Young
Keyword(s):  
Isothermal Transformation ◽  
Transformation Behavior ◽  
Thermally Grown

Increasing in wear resistance of excavating machine elements

2020 ◽  
pp. 306-308
Author(s):  
V.S. Bochkov
Keyword(s):  
Wear Resistance ◽  
Wear Rate ◽  
Abrasive Wear ◽  
Thermomechanical Treatment ◽  
Cold Work ◽  
Hadfield Steel ◽  
Outer Side ◽  
Viii And Ix ◽  
Machine Elements ◽  
The Impact

The relevance of the search for solutions to increase the wear resistance of bucket teeth of excavating machine type front shovel is analyzed. The reasons for the wear of the teeth are considered. It is determined that when excavating machines work for rocks of VIII and IX categories, impact-abrasive wear of the inner side of the teeth and abrasive external wear occurs. It is proved that the cold-work hardening of Hadfield steel (the teeth material), which occurs during the excavating machine teeth work in the rocks of VIII and IX categories, reduces the impact-abrasive wear rate on the inner side of the teeth and does not affect the abrasive wear of the outer. The methods for thermomechanical treatment of the outer side of the excavating machine tooth is proposed. It can increase the wear resistance of Hadfield steel (110G13L) up to 1.7 times and lead to the self-sharpening effect of the tooth due to equalization of the wear rate of the outer and inner parts of the tooth. The efficiency factor of thermomechanical treatment to reduce the of abrasive wear rate of Hadfield steel is experimentally proved.

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