Impact toughness of structural graphite

1977 ◽  
Vol 42 (5) ◽  
pp. 470-472
Author(s):  
Yu. S. Virgil'ev ◽  
V. V. Gundorov ◽  
V. G. Makarchenko
Keyword(s):  
Impact Toughness ◽  
Structural Graphite

Reasons for the formation of crack-like defects in 09Г2С heavy plate steel for tank steel structures

2020 ◽  
Vol 10 (5) ◽  
pp. 479-489
Author(s):  
Vitaly М. Goritsky ◽  
◽  
Georgy R. Shneyderov ◽  
Eugeny P. Studenov ◽  
Olga A. Zadubrovskaya ◽  
...  
Keyword(s):  
Impact Toughness ◽  
Defect Formation ◽  
Steel Structures ◽  
Controlled Rolling ◽  
Plate Steel ◽  
Heavy Plate ◽  
Oil Storage ◽  
Magnetic Inspection ◽  
Metal Microstructure

Determination of causes of crack-like defects in the heavy plate steel 09Г2С is a crucial task, the solution of which is aimed at improving the mechanical safety of oil storage steel vertical tanks. In order to determine the causes for the formation of a group of crack-like defects oriented towards rolling, revealed during grinding and magnetic inspection of the tank wall surface near the vertical weld, the analysis of the chemical composition and testing of the mechanical properties of heavy plate steel were carried out, including the determination of the anisotropy of impact toughness in the temperature range from +20 to –75 °С, analysis of metal microstructure in the area of defect formation on transversal sections and rolled surface. Impact bending tests of 09Г2С heavy plate steel after controlled rolling in longitudinal and transverse directions showed no anisotropy of impact toughness, as well as high purity of steel as for sulfur and titanium, which at higher content causes impact toughness anisotropy. The revealed features of metal microstructure near the defects made it possible to conclude that the crack-like defects were formed during the rolling of gas bubbles at the stage of preparing semi-finished rolled products for finishing rolling. One of the possible methods to prevent such defects from getting into finished rolled products is the use of automated systems of visual inspection of rolled products in the manufacturing process.

Hybrid polymer composite materials. Part 2. Preparation technology

2020 ◽  
pp. 8-13
Keyword(s):  
Composite Materials ◽  
Impact Toughness ◽  
Polymer Composites ◽  
The Other ◽  
Polymer Materials ◽  
Hybrid Polymer ◽  
Preparation Technology ◽  
Advantages And Disadvantages ◽  
Hybrid Polymer Composite ◽  
The One

The main methods (pressing and winding) of the processing of hybrid polymer composites to obtain items were examined. Advantages and disadvantages of the methods were noted. Good combinations of different-module fibers (carbon, glass, boron, organic) in hybrid polymer materials are described, which allow one to prepare materials with high compression strength on the one hand, and to increase fracture energy of samples and impact toughness on the other hand.

Impact Toughness of Friction Stir Welded Al-Mg Alloy*

2014 ◽  
Vol 56 (10) ◽  
pp. 837-841
Author(s):  
Aleksandar Sedmak ◽  
Abdasalam Mohamed Mahdi Eramah ◽  
Srđan Tadić ◽  
Srđa Perković ◽  
Horia Dascau
Keyword(s):  
Impact Toughness ◽  
Mg Alloy ◽  
Friction Stir

Corrosion Properties and Impact Toughness of 2205 Duplex Stainless Steel after TIG Welding*

2014 ◽  
Vol 56 (10) ◽  
pp. 786-794 ◽  
Author(s):  
Aziz Barış Basyigit ◽  
Adem Kurt
Keyword(s):  
Stainless Steel ◽  
Impact Toughness ◽  
Duplex Stainless Steel ◽  
Tig Welding ◽  
Corrosion Properties ◽  
2205 Duplex Stainless Steel

RUUKKI RAEX 300

Alloy Digest ◽  
2012 ◽  
Vol 61 (2) ◽  
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
Shear Strength ◽  
Impact Toughness ◽  
Yield Strength ◽  
Physical Properties ◽  
Tensile Properties ◽  
High Strength ◽  
Structural Components ◽  
Wear Resistant

Abstract RUUKKI RAEX 300 (typical yield strength 900 MPa) is part of the Raex family of high-strength and wear-resistant steels with favorable hardness and impact toughness to extend life and decrease wear in structural components. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear strength as well as fracture toughness. It also includes information on wear resistance as well as forming, machining, and joining. Filing Code: SA-643. Producer or source: Rautaruukki Corporation.

CRUCIBLE CPM 3V

Alloy Digest ◽  
1997 ◽  
Vol 46 (8) ◽  
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
Impact Toughness ◽  
Physical Properties ◽  
Heat Treating ◽  
Tool Steels

Abstract CPM 3V offers impact toughness (Charpy C notch) approaching the shock-resistant tool steels, but with greater wear resistance. This datasheet provides information on composition, physical properties, hardness, and elasticity as well as fracture toughness. It also includes information on wear resistance as well as heat treating and machining. Filing Code: TS-558. Producer or source: Crucible Materials Corporation.

LSS H11

Alloy Digest ◽  
2009 ◽  
Vol 58 (2) ◽  
Keyword(s):  
Wear Resistance ◽  
Impact Toughness ◽  
Physical Properties ◽  
Tool Steel ◽  
Heat Treating ◽  
Steel Company ◽  
Hot Work Tool Steel ◽  
Specialty Steel

Abstract LSS H11 is a hot-work tool steel with excellent impact toughness. It is used where resistance to cracking is needed. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on wear resistance as well as heat treating and machining. Filing Code: TS-677. Producer or source: Latrobe Specialty Steel Company.

INFLUENCE OF AUSTENITIZING TEMPERATURE ON THE MICROSTRUCTURE AND IMPACT TOUGHNESS OF A HIGH STRENGTH LOW ALLOY HSLA100 STEEL

2012 ◽  
Vol 48 (11) ◽  
pp. 1290 ◽  
Author(s):  
Yang YOU ◽  
Xuemin WANG ◽  
Chengjia SHANG
Keyword(s):  
Impact Toughness ◽  
High Strength ◽  
Austenitizing Temperature

scholarly journals Continuous Cooling Transformation Diagram, Microstructures, and Properties of the Simulated Coarse-Grain Heat-Affected Zone in a Low-Carbon Bainite E550 Steel

Metals ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 939 ◽  
Author(s):  
Yun Zong ◽  
Chun-Ming Liu
Keyword(s):  
Impact Toughness ◽  
Cooling Rate ◽  
Vickers Hardness ◽  
Heat Affected Zone ◽  
Granular Bainite ◽  
Coarse Grain ◽  
Low Carbon ◽  
Transformation Diagram ◽  
Lath Bainite ◽  
Continuous Cooling Transformation Diagram

In order to provide important guidance for controlling and obtaining the optimal microstructures and mechanical properties of a welded joint, the continuous cooling transformation diagram of a new low-carbon Nb-microalloyed bainite E550 steel in a simulated coarse-grain heat-affected zone (CGHAZ) has been constructed by thermal dilatation method in this paper. The welding thermal simulation experiments were conducted on a Gleeble-3800 thermo-mechanical simulator. The corresponding microstructure was observed by a LEICA DM2700M. The Vickers hardness (HV) and the impact toughness at −40 °C were measured according to the ASTM E384 standard and the ASTM E2298 standard, respectively. The experimental results may indicate that the intermediate temperature phase transformation of the whole bainite can occur in a wide range of cooling rates of 2–20 °C/s. In the scope of cooling rates 2–20 °C/s, the microstructure of the heat-affected zone (HAZ) mainly consists of lath bainite and granular bainite. Moreover, the proportion of lath bainite increased and granular bainite decreased as the cooling rate increasing. There is a spot of lath martensite in the microstructure of HAZ when the cooling rate is above 20 °C/s. The Vickers hardness increases gradually with the increasing of the cooling rate, and the maximum hardness is 323 HV10. When the cooling time from 800 °C to 500 °C (t8/5) is 5–15 s, it presents excellent −40 °C impact toughness (273–286 J) of the CGHAZ beyond the base material (163 J).

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