High strength and high fracture toughness ceramic−iron aluminide (Fe3Al) composites

2006 ◽  
Vol 60 (7) ◽  
pp. 883-887 ◽  
Author(s):  
L.M. Peng ◽  
H. Li ◽  
J.H. Wang ◽  
M. Gong
Keyword(s):  
Fracture Toughness ◽  
High Strength ◽  
Iron Aluminide ◽  
High Fracture Toughness ◽  
High Fracture

FERRIUM M54

Alloy Digest ◽  
2018 ◽  
Vol 67 (9) ◽  
Keyword(s):  
Fracture Toughness ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
High Resistance ◽  
High Strength ◽  
Cost Effective ◽  
High Fracture Toughness ◽  
High Fracture ◽  
Structural Applications ◽  
Resistance To Stress

Abstract Ferrium M54 was designed to create a cost-effective, ultra high-strength, high-fracture toughness material with a high resistance to stress-corrosion cracking for use in structural applications. This datasheet provides information on composition, hardness, and tensile properties as well asfatigue. Filing Code: SA-822. Producer or source: QuesTek Innovations, LLC.

Preparation and Characterization of Reaction Sintering B4C/SiC Composite Ceramic

2014 ◽  
Vol 602-603 ◽  
pp. 536-539
Author(s):  
Hai Bin Sun ◽  
Yu Jun Zhang ◽  
Qi Song Li
Keyword(s):  
Fracture Toughness ◽  
High Performance ◽  
Bending Strength ◽  
Carbon Sources ◽  
High Hardness ◽  
High Strength ◽  
Composite Ceramic ◽  
High Fracture Toughness ◽  
Reaction Sintering ◽  
High Fracture

High hardness, high strength, high fracture toughness and low density are required for novel bulletproof materials. B4C/SiC composite ceramic is one of the most potential candidates. In this study, B4C/SiC composite ceramic was prepared by reaction sintering. The influence of B4C content, species and content of carbon, sintering temperature on the mechanical properties of B4C/SiC composite ceramic were studied. A high performance B4C/SiC composite ceramic was sintered at 1750°C for 30 min. Phenolic resin and carbon black were both chosen as carbon sources, whose favorable contents were 10wt%, 5wt%, respectively. The density of sintered bodies reduces with B4C content increases. To some extent, fracture toughness, bending strength improve initially and then deteriorate with the increase of B4C content whose optimal amount is 30wt%. The optimal fracture toughness and bending strength of the B4C/SiC composite ceramic are 5.07MPa·m1/2 and 487MPa, respectively. Meanwhile, the Viker-hardness of the sintered body is 30.2GPa, the density is as low as 2.82g/cm3.

Correlation between microstructure and mechanical properties in silicon carbide with alumina addition

1993 ◽  
Vol 8 (7) ◽  
pp. 1635-1643 ◽  
Author(s):  
S.S. Shinozaki ◽  
J. Hangas ◽  
K.R. Carduner ◽  
M.J. Rokosz ◽  
K. Suzuki ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Silicon Carbide ◽  
Analytical Electron Microscopy ◽  
High Strength ◽  
High Fracture Toughness ◽  
Sintered Body ◽  
High Fracture ◽  
High Fatigue ◽  
Alumina Addition

The microstructure of pressureless sintered silicon carbide (SiC) materials with alumina (Al2O3) addition was investigated using analytical electron microscopy and nuclear magnetic resonance. A sintered body with a density of higher than 99% theoretical was obtained with an addition of 5 wt.% Al2O3. The sintered body (SiC–Al2O3) has high strength, high fracture toughness, and high fatigue resistance. Its fracture toughness is approximately 5 MPa-m1/2, which is twice as high as that of pressureless sintered SiC materials with boron and carbon additions (SiC–B–C). The correlation between the microstructure and the mechanical properties is presented here. The starting β–SiC powder is mostly transformed to α–SiC with various polytype distributions during the sintering process. The microstructure has homogeneously distributed, fine, plate-like interlocking gains with a high aspect ratio. Well-developed basal planes form parallel and elongated boundaries, and the crystal structure is mostly the 6H polytype (56%) mixed with thin lamellar 4H.

LESCALLOY AF1410 VIM-VAR

Alloy Digest ◽  
2010 ◽  
Vol 59 (8) ◽  
Keyword(s):  
Fracture Toughness ◽  
Physical Properties ◽  
High Strength ◽  
Heat Treating ◽  
High Fracture Toughness ◽  
Steel Company ◽  
High Fracture ◽  
Strength Alloy ◽  
Specialty Steel ◽  
Very High

Abstract Lescalloy AF1410 VIM-VAR is a clean high strength alloy steel with high strength and a very high fracture toughness. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness. It also includes information on forming, heat treating, and machining. Filing Code: SA-618. Producer or source: Latrobe Specialty Steel Company.

Effect of Mo Addition on Microstructure and Properties of Nb/Nb5Si3 In-Situ Composite

2004 ◽  
Vol 449-452 ◽  
pp. 753-756 ◽  
Author(s):  
Wei Li ◽  
Hai Bo Yang ◽  
Ai Dang Shan ◽  
Jian Sheng Wu
Keyword(s):  
Fracture Toughness ◽  
Room Temperature ◽  
Metastable Phase ◽  
High Strength ◽  
High Fracture Toughness ◽  
High Fracture ◽  
Ductile Phase ◽  
Temperature Fracture ◽  
The Stability

Nb/Nb5Si3 in-situ composites are very attractive structural materials for these materials perform a good balance in mechanical properties, including a high strength at high temperature (>1373K) and reasonably high fracture toughness at room temperature. Metastable phase Nb3Si plays an important role in the properties of Nb/Nb5Si3 composites by affecting microstructure and volume fracture of ductile phase. In this paper, Nb-10Si-xMo and Nb-18Si-xMo (x=0,5,15) are prepared by arc melting and annealed at 1473K for 100h. Single edge-notched bending (SENB) test was used to study the fracture toughness of Nb-Si-Mo alloys. The stability of metastable phase is analyzed by XRD. The room temperature fracture toughness of Nb-10Si is 10.47MPa(m)1/2 and higher than that of binary Nb-18Si alloys at near-eutectic compositions. The addition of Mo improves the fracture toughness of as cast Nb-Si alloys from 4.1 MPa(m)1/2 to 9.9MPa(m)1/2 at near-eutectic compositions and decreases it from 10.47 MPa(m)1/2 to 8.8MPa(m)1/2 at hypoeutectic compositions.

An Overview on the Fracture Behavior of Metals Processed by High Pressure Torsion

2010 ◽  
Vol 667-669 ◽  
pp. 671-676 ◽  
Author(s):  
Anton Hohenwarter ◽  
Reinhard Pippan
Keyword(s):  
Fracture Toughness ◽  
High Pressure ◽  
Fracture Behavior ◽  
High Pressure Torsion ◽  
High Strength ◽  
High Fracture Toughness ◽  
High Fracture ◽  
Ultrafine Grained ◽  
Specimen Orientation ◽  
Strength And Ductility

Motivated by the large variety of enhanced properties of ultrafine and nanocrystalline materials such materials are under extensive investigation. Besides focusing on classical material parameters, like strength and ductility, the fracture toughness of these materials is also of great importance, especially when the damage tolerance is required. In this contribution an overview of the fracture behavior of different metals covering ultrafine-grained iron and nickel as well as a nanocrystalline steel processed via high pressure torsion (HPT) will be given. It will be shown that the specimen orientation can have a tremendous influence on the fracture behavior and toughness. Due to this toughness anisotropy an unexpectedly good combination of high strength and high fracture toughness can be achieved very often in these materials.

High-Strength and High-Fracture-Toughness Ceramics in the Al2O3/LaAl11O18Systems

1995 ◽  
Vol 78 (7) ◽  
pp. 1853-1856 ◽  
Author(s):  
Masaki Yasuoka ◽  
Kiyoshi Hirao ◽  
Manuel E. Brito ◽  
Shuzo Kanzaki
Keyword(s):  
Fracture Toughness ◽  
High Strength ◽  
High Fracture Toughness ◽  
High Fracture
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