Bainitic Steels having High Toughness and Impact Energy Absorption for Transportation and Low Temperature Structural Applications

2006 ◽  
pp. 10-15
Author(s):  
Andrzej Kazimierz Lis ◽  
Jadwiga Lis ◽  
Andrzej Bochenek
Keyword(s):  
Low Temperature ◽  
Energy Absorption ◽  
Impact Energy ◽  
High Toughness ◽  
Bainitic Steels ◽  
Structural Applications

scholarly journals Low temperature effect on impact energy absorption capability of PEEK composites

2015 ◽  
Vol 134 ◽  
pp. 440-449 ◽  
Author(s):  
D. Garcia-Gonzalez ◽  
M. Rodriguez-Millan ◽  
A. Rusinek ◽  
A. Arias
Keyword(s):  
Low Temperature ◽  
Temperature Effect ◽  
Energy Absorption ◽  
Impact Energy

AISI 8630

Alloy Digest ◽  
1956 ◽  
Vol 5 (10) ◽  
Keyword(s):  
Fracture Toughness ◽  
Low Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Alloy Steel ◽  
Heat Treating ◽  
High Tempering ◽  
High Toughness ◽  
Steel Mills ◽  
Temperature Performance

Abstract AISI 8630 is a chromium, nickel, molybdenum alloy steel. It is of the moderate deep hardening type and develops high toughness at high tempering temperatures. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on low temperature performance as well as forming, heat treating, machining, and joining. Filing Code: SA-49. Producer or source: Alloy steel mills and foundries.

Characteristics of Wheel Tread for Property Improvement of Railway Wheel

2006 ◽  
Vol 326-328 ◽  
pp. 1075-1078
Author(s):  
Seok Jin Kwon ◽  
Jung Won Seo ◽  
Hyun Mu Hur ◽  
Sung Tae Kwon
Keyword(s):  
Fracture Toughness ◽  
Low Temperature ◽  
Impact Energy ◽  
Low Cycle Fatigue ◽  
Maintenance Cost ◽  
Railway Vehicle ◽  
Cycle Fatigue ◽  
Railway Wheel ◽  
Mechanics Characteristics ◽  
Wheel Material

Despite of improvement of wheel material for railway vehicle, the damages of railway wheel have been occurred in service running. Because of wheel damage with spalling, shelling and thermal crack, the maintenance cost for the railway wheel has increased. The railway wheel had standardized but the chemical composition, the mechanical property and the hardness with respect to railway wheel is merely established. In order to reduce wheel damage, it is necessary to reinforce the standard of railway wheel. In present study, the fracture mechanics characteristics of railway wheel such as low cycle fatigue, fracture toughness, impact energy depended on low temperature and so on have tested. The result shows that the standard of railway wheel has to supplement fracture toughness and impact energy depended on low temperature etc.

scholarly journals Impact energy absorption of three mouthguard materials in three environments

2010 ◽  
Vol 26 (1) ◽  
pp. 23-29 ◽  
Author(s):  
Darin R. Lunt ◽  
Deborah A. Mendel ◽  
William A. Brantley ◽  
F. Michael Beck ◽  
Sarandeep Huja ◽  
...  
Keyword(s):  
Energy Absorption ◽  
Impact Energy

scholarly journals Complex Nano-Scale Structures for Unprecedented Properties in Steels

2016 ◽  
Vol 879 ◽  
pp. 2401-2406 ◽  
Author(s):  
Francisca G. Caballero ◽  
Jonathan D. Poplawsky ◽  
Hung Wei Yen ◽  
Rosalia Rementeria ◽  
Lucia Morales-Rivas ◽  
...  
Keyword(s):  
Low Temperatures ◽  
Sliding Wear ◽  
Steel Structures ◽  
Solid Reaction ◽  
Significant Challenge ◽  
Bearing Steels ◽  
Atomic Mechanism ◽  
Bainitic Steels ◽  
Structural Applications ◽  
Scale Structures

Processing bulk nanoscrystalline materials for structural applications still poses a significant challenge, particularly in achieving an industrially viable process. In this context, recent work has proved that complex nanoscale steel structures can be formed by solid reaction at low temperatures. These nanocrystalline bainitic steels present the highest strength ever recorded, unprecedented ductility, fatigue on par with commercial bearing steels and exceptional rolling-sliding wear performances. A description of the characteristics and significance of these remarkable structures in the context of the atomic mechanism of transformation is provided.

Effect of SiO2 Nanoparticles on the Mechanical and Low Velocity Impact Properties of Epoxy/Glass Composites

2016 ◽  
Vol 838 ◽  
pp. 29-35
Author(s):  
Michał Landowski ◽  
Krystyna Imielińska
Keyword(s):  
Flexural Strength ◽  
Energy Absorption ◽  
Impact Energy ◽  
Epoxy Matrix ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Nanoparticle Suspension ◽  
Impact Properties ◽  
Velocity Impact ◽  
The Impact

Flexural strength and low velocity impact properties were investigated in terms of possibile improvements due to epoxy matrix modification by SiO2 nanoparticles (1%, 2%, 3%, 5%, 7%wt.) in glass/epoxy laminates formed using hand lay-up method. The matrix resin was Hexion L285 (DGEBA) with Nanopox A410 - SiO2 (20 nm) nanoparticle suspension in the base epoxy resin (DGEBA) supplied by Evonic. Modification of epoxy matrix by variable concentrations of nanoSiO2 does not offer significant improvements in the flexural strength σg, Young’s modulus E and interlaminar shear strength for 1% 3% and 5% nanoSiO2 and for 7% a slight drop (up to ca. 15-20%) was found. Low energy (1J) impact resistance of nanocomposites represented by peak load in dynamic impact characteristics was not changed for nanocompoosites compared to the unmodified material. However at higher impact energy (3J) nanoparticles appear to slightly improve the impact energy absorption for 3% and 5%. The absence or minor improvements in the mechanical behaviour of nanocomposites is due to the failure mechanisms associated with hand layup fabrication technique: (i.e. rapid crack propagation across the extensive resin pockets and numerous pores and voids) which dominate the nanoparticle-dependent crack energy absorption mechanisms (microvoids formation and deformation).

scholarly journals The Young`s Modulus and Impact Energy Absorption of Wet and Dry Deer Cortical Bone

2009 ◽  
Vol 1 (1) ◽  
pp. 38-45 ◽  
Author(s):  
John D. Currey ◽  
Tomas Landete-Castillejos ◽  
Jose A. Estevez ◽  
Augusto Olguin ◽  
Andres J. Garcia ◽  
...  
Keyword(s):  
Cortical Bone ◽  
Energy Absorption ◽  
Impact Energy

Pest Resistant and Low CTE MoSi2-Matrix for High Temperature Structural Applications

1994 ◽  
Vol 350 ◽  
Author(s):  
M. G. Hebsur
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Oxidation Resistance ◽  
High Temperature Oxidation ◽  
Matrix Composition ◽  
Temperature Oxidation ◽  
Accelerated Oxidation ◽  
Structural Applications ◽  
Base Matrix ◽  
Sic Reinforcement

AbstractThe objective of this investigation was to identify a pest resistant MoSi2-base matrix composition having properties suitable for SiC reinforcement. A 30 vol.% addition of fine Si3N4 particulates to MoSi2 significantly improved the low temperature accelerated oxidation resistance and thereby eliminated pest failure. Addition of Si3N4 also improved the high temperature oxidation resistance, strength and more importantly lowered the CTE of MoSi2 such that cracking was eliminated in a hybrid composite consisting of 30 vol.% Si3N4 and 30 vol. % SCS-6 fibers.

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