Mechanism of destruction of special carbides in steel type R6M5 in thermomechanical treatment

1989 ◽  
Vol 31 (6) ◽  
pp. 464-466
Author(s):  
V. I. Movchan ◽  
A. S. Kovzel'
Keyword(s):  
Thermomechanical Treatment ◽  
Steel Type ◽  
Type R6m5

Formation of austenitic matrix in case-hardened steel type R6M5

1989 ◽  
Vol 31 (8) ◽  
pp. 578-580 ◽  
Author(s):  
V. I. Movchan ◽  
A. I. Miroshnichenko ◽  
L. G. Pedan
Keyword(s):  
Hardened Steel ◽  
Austenitic Matrix ◽  
Steel Type ◽  
Type R6m5

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

Solidificatation Process of High Speed Tool Steel Type Cast Iron for Rolls

1995 ◽  
Vol 81 (9) ◽  
pp. 912-917 ◽  
Author(s):  
Keisaku OGI ◽  
Yukinori ONO ◽  
Hong ZHOU ◽  
Hirofumi MIYAHARA
Keyword(s):  
Cast Iron ◽  
Tool Steel ◽  
High Speed ◽  
Steel Type

Estimation of Some Mechanical Properties for Similar & Dissimilar Welded Joints

2014 ◽  
Vol 2 (1) ◽  
pp. 59-76
Author(s):  
Abdullah Daie'e Assi
Keyword(s):  
Stainless Steel ◽  
Carbon Steel ◽  
Austenitic Stainless Steel ◽  
Base Metal ◽  
Welded Joints ◽  
Plate Thickness ◽  
Low Carbon Steel ◽  
Dissimilar Metals ◽  
Low Carbon ◽  
Steel Type

This research deals with the choice of the suitable filler metal to weld the similar and dissimilar metals (Low carbon steel type A516 & Austenitic stainless steel type 316L) under constant conditions such as, plate thickness (6 mm), voltage (78 v), current (120 A), straight polarity. This research deals with three major parts. The first parts Four types of electrodes were used for welding of dissimilar metals (C.St A516 And St.St 316L) two from mild steel (E7018, E6013) and other two from austenitic stainless steel (E309L, E308L) various inspection were carried out include (Visual T., X-ray T., δ- Ferrite phase T., and Microstructures T.) and mechanical testing include (tensile T., bending T. and micro hardness T.) The second parts done by used the same parameters to welding similar metals from (C.St A516) Or (St.St 316L). The third parts deals with welding of dissimilar weldments (C.St And St.St) by two processes, gas tungsten are welding (GTAW) and shielded metal are welding (SMAW).        The results indicated that the spread of carbon from low carbon steel to the welding zone in the case of welding stainless steel elect pole (E309L) led to Configuration Carbides and then high hardness the link to high values ​​compared with the base metal. In most similar weldments showed hardness of the welding area is  higher than the hardness of the base metal. The electrode (E309L) is the most suitable to welding dissimilar metals from (C.St A516 With St.St 316L). The results also showed that the method of welding (GTAW) were better than the method of welding (SMAW) in dissimilar welded joints (St.St 316L with C.St A516) in terms of irregular shape and integrity of the welding defects, as well as characterized this weldments the high-lift and resistance ductility good when using the welding conditions are similar.

AK STEEL TYPE 304L

Alloy Digest ◽  
2020 ◽  
Vol 69 (8) ◽  
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
Heat Treating ◽  
Stress Relief ◽  
Carbide Precipitation ◽  
Low Carbon ◽  
Steel Type ◽  
Temperature Performance ◽  
Type 304

Abstract AK Steel Type 304L is a chromium-nickel austenitic stainless steel. It is an extra low-carbon variation of Type 304 with a 0.030% maximum carbon content that eliminates carbide precipitation due to welding. As a result, this alloy can be used in the “as-welded” condition, even in severe corrosive conditions. In many cases it eliminates the necessity of annealing weldments except for applications specifying stress relief. Type 304L has slightly lower mechanical properties than Type 304. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fatigue. It also includes information on high temperature performance, corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-1324. Producer or Source: AK Steel Corporation.

AK STEEL TYPE 304

Alloy Digest ◽  
2020 ◽  
Vol 69 (5) ◽  
Keyword(s):  
Stainless Steel ◽  
Carbon Content ◽  
Atmospheric Corrosion ◽  
Carbide Precipitation ◽  
Steel Grade ◽  
Good Resistance ◽  
Steel Type ◽  
Temperature Performance ◽  
Type 304 ◽  
Lower Carbon

Abstract AK Steel Type 304 is a chromium-nickel austenitic stainless steel. It is a variation of the base 18-8 grade, but with higher chromium and lower carbon content. The lower carbon content minimizes carbide precipitation due to welding and reduces its susceptibility to intergranular corrosion. Type 304 is the most versatile and widely used stainless steel grade. It combines good resistance to atmospheric corrosion and to many chemicals, food, and beverages. It has excellent formability. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties as well as fatigue. It also includes information on low and high temperature performance, and corrosion resistance as well as forming and joining. Filing Code: SS-1317. Producer or source: AK Steel Corporation. Originally published April 2020, corrected May 2020.

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