scholarly journals Study of structure of high-strength cold-resistant steel after quenching and tempering

2021 ◽  
pp. 61-65
Author(s):  
P. P. Polteskov ◽  
I. L. Yakovleva ◽  
A. S. Kuznetsova ◽  
N. V. Koptseva ◽  
O. A. Nikitenko
Keyword(s):  
High Strength ◽  
Resistant Steel ◽  
Quenching And Tempering

Structure changes of high-strength economically alloyed steel 09KhGN2MD (09CrMnNi2MoCu) when tempering

2019 ◽  
pp. 15-26 ◽  
Author(s):  
M. V. Golubeva ◽  
O. V. Sych ◽  
E. I. Khlusova ◽  
G. D. Motovilina ◽  
E. V. Sviatysheva ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Fracture Mode ◽  
High Strength ◽  
Resistant Steel ◽  
Optimal Heat ◽  
Optimal Heat Treatment ◽  
Structure Changes ◽  
The Relationship ◽  
Quenching And Tempering

Purpose of the present investigation is to determine the optimal heat treatment parameters that ensure yield strength over 690 MPa in combination with toughness of at least 35 J/cm2at temperature –70°C in new economically alloyed cold-resistant steel. The effect of various quenching and tempering parameters on mechanical properties, structure of steel and fracture mode of samples after impact tests at temperature –70°C has been studied. The relationship between the properties, structure and fracture mode of steel samples is shown. The optimal heat treatment parameters of new economically alloyed cold-resistant steel are determined.

Production of sheet rolled products made of a nitrogen-bearing high-strength corrosion-resistant steel using electroslag remelting

2009 ◽  
Vol 2009 (7) ◽  
pp. 655-658 ◽  
Author(s):  
E. R. Gutman ◽  
V. A. Durynin ◽  
G. Yu. Kalinin ◽  
O. A. Khar’kov ◽  
V. V. Tsukanov
Keyword(s):  
High Strength ◽  
Electroslag Remelting ◽  
Corrosion Resistant Steel ◽  
Resistant Steel ◽  
Corrosion Resistant

scholarly journals Evaluation of Microstructure and Selected Mechanical Properties of Laser Beam Welded S690QL High-Strength Steel

2018 ◽  
Vol 18 (3) ◽  
pp. 34-42 ◽  
Author(s):  
L. Tuz
Keyword(s):  
Mechanical Properties ◽  
Laser Beam ◽  
High Strength Steel ◽  
High Strength ◽  
Fine Grain ◽  
Steel Material ◽  
Bainitic Structure ◽  
Haz Width ◽  
Quenching And Tempering ◽  
Softened Zone

AbstractThe paper presents results of microstructure and mechanical properties investigation of laser beam welded high-strength steel. Material for test was non-alloyed steel with yield strength of 690 MPa after quenching and tempering in delivery condition. Research carried out on the butt-welded joints shows fine-grain martensitic-bainitic structure of base metal and in the weld. Investigations of mechanical properties revealed the softened zone in HAZ where the hardness decrease without microstructural changes was observed. Moreover, an influence of softened zone and HAZ width on impact strength was observed where the occurrence of lower hardness led to fracture path deviation phenomenon.

Low Transverse Ductility in a New High-Strength Corrosion-Resistant Steel: Microstructure and Texture

2019 ◽  
Vol 72 (6) ◽  
pp. 1453-1457
Author(s):  
Govardhana Poojari ◽  
Sujoy Kumar Kar ◽  
Shiv Brat Singh ◽  
Thomas Tharian Kadavil ◽  
C. R. Anoop
Keyword(s):  
High Strength ◽  
Corrosion Resistant Steel ◽  
Resistant Steel ◽  
Corrosion Resistant ◽  
Steel Microstructure

Microstructure and Mechanical Properties of High Strength Alloyed Steel for Aerospace Application

2018 ◽  
Vol 284 ◽  
pp. 351-356 ◽  
Author(s):  
Mikhail V. Maisuradze ◽  
Maksim A. Ryzhkov
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
High Strength ◽  
Single Stage ◽  
The Novel ◽  
Tempering Temperature ◽  
Quenching And Partitioning ◽  
Aerospace Application ◽  
Cooling Conditions ◽  
Quenching And Tempering

The high strength aerospace steel alloyed with Cr, Mn, Si, Ni, W and Mo was studied. The austenite transformations under continuous cooling conditions were investigated using the dilatometer analysis at the cooling rates 0.1...30 °C/s. The mechanical properties of the studied steel were determined after the conventional quenching and tempering heat treatment. The dependences of the mechanical properties on the tempering temperature were obtained. The novel quenching and partitioning heat treatment was applied to the steel under consideration. The microstructure and the mechanical properties were studied after three different modes of the quenching and partitioning (QP) treatment: single-stage QP, two-stage QP and single-stage QP with subsequent tempering (QPT).

Research on the Welding Technique of Quenching and Tempering Steel

2013 ◽  
Vol 659 ◽  
pp. 36-38 ◽  
Author(s):  
Bi Xin Guo ◽  
Xiao Wei Du
Keyword(s):  
High Strength Steel ◽  
High Strength ◽  
Tig Welding ◽  
Aircraft Maintenance ◽  
Performance Tests ◽  
Welding Condition ◽  
Final Treatment ◽  
And Performance ◽  
Quenching And Tempering ◽  
Welding Technique

This paper discusses welding technique of quenching and tempering steel after final treatment, and raises a composite welding technique and its corresponding welding condition by combining SMAW and TIG welding. Finally, technical experiments and performance tests have been done on typical parts of high strength steel, the results are satisfactory and indicate that it may be used in aircraft maintenance.

scholarly journals Effect of Quenching and Tempering on Diffusion of Hydrogen in High-Strength Alloy Steels

1978 ◽  
Vol 42 (4) ◽  
pp. 325-330 ◽  
Author(s):  
Yoshiichi Sakamoto ◽  
Keizo Takao ◽  
Katsuhisa Takeuchi ◽  
Shuzo Tokumitsu
Keyword(s):  
High Strength ◽  
Alloy Steels ◽  
Strength Alloy ◽  
Quenching And Tempering ◽  
Diffusion Of Hydrogen

Comparision of Direct Quenching and Reheat Quenching Process on Microstructure and Mechanical Properties of a High Strength Steel

2011 ◽  
Vol 287-290 ◽  
pp. 805-809
Author(s):  
Zheng Tao Duan ◽  
Yan Mei Li ◽  
Fu Xian Zhu
Keyword(s):  
Mechanical Properties ◽  
Rolling Direction ◽  
High Strength ◽  
Direct Quenching ◽  
Microstructure And Mechanical Properties ◽  
Quenching Process ◽  
Austenite Grains ◽  
Equiaxed Grains ◽  
Quenching And Tempering ◽  
Reheat Quenching

The effects of direct quenching and tempering (DQ-T) process and conventional reheat quenching and tempering (RQ-T) processes on the microstructure and mechanical properties of a high strength low alloy steel were investigated. In the as-quenched DQ steel, prior austenite grains are elongated parallel to the rolling direction, whereas the as-quenched RQ steel mainly consists of equiaxed grains; The DQ process was found to enhance the hardenability of steel effectively. The tensile strength and yield strength of DQ specimen, were higher than that of RQ specimen. In contrast, low temperature toughness of DQ-T specimen was generally inferior to that of RQ-T specimen.

The Influence of Austenitization Temperature on the Mechanical Properties of a Prehardened Mould Steel

2012 ◽  
Vol 706-709 ◽  
pp. 2140-2145 ◽  
Author(s):  
Hamed Hoseiny ◽  
Francisca García Caballero ◽  
David San Martín ◽  
Carlos Capdevila
Keyword(s):  
Impact Toughness ◽  
High Strength ◽  
Dimensional Change ◽  
Considerable Change ◽  
Austenitization Temperature ◽  
Aisi P20 ◽  
Wide Range ◽  
Martensite Packet ◽  
The Many ◽  
Quenching And Tempering

The many practical difficulties and longer lead time with heat treatment of mould steels after machining have led to increased demand for steels in prehardened condition, typically ~ 40HRC. At this hardness the steel possesses an optimal combination of high strength and machinability. The steels used for moulds require a wide range of demanding properties, among which high enough strength and toughness are the primary necessities in order to resist any deformation and dimensional change in mould during use. Uddeholm Impax HH which resembles the modified AISI P20 has been widely used for moulding of plastics and die-casting of low melting temperature metals. The common hardening process for Impax HH is conventional quenching and tempering. Hence, investigating the effect of hardening parameters on the required properties upon this steel grade is beneficial in improving it for better performance as a prehardened mould steel. In the present work, the effect of changes in austenitization temperature and consequently the prior austenite grain and martensite packet sizes on the tensile properties and impact toughness of Uddeholm Impax HH at the hardness of ~40HRC is studied. The results have shown reduction in impact toughness but no considerable change in yield and ultimate tensile strength upon increasing the austenitization temperature.

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