scholarly journals EVALUATION OF SUBSIZE IZOD SPECIMEN DESIGNS FOR DETERMINING THE NOTCH TOUGHNESS OF ZIRCALOY-2

1962 ◽  
Author(s):  
J.J. Prislinger
Keyword(s):  
Notch Toughness

USS STRUX

Alloy Digest ◽  
1960 ◽  
Vol 9 (7) ◽  
Keyword(s):  
United States ◽  
Tensile Strength ◽  
High Strength ◽  
Notch Toughness ◽  
United States Steel Corporation ◽  
Treated Condition ◽  
High Strength Level ◽  
Heat Treated ◽  
Heat Treated Condition ◽  
Very High

Abstract USS STRUX is an alloy steel designed for use in the heat treated condition at a minimum tensile strength of 280,000 psi. At this very high strength level the steel has adequate ductility and notch toughness for critical applications. This datasheet provides information on composition and tensile properties. Filing Code: SA-100. Producer or source: United States Steel Corporation.

Local Notch Toughness of Slab Surface Zone in ULC/IF and HSLA Steels

2015 ◽  
Vol 662 ◽  
pp. 209-212
Author(s):  
Margita Longauerová ◽  
Maria Hurakova ◽  
Pavel Bekeč ◽  
Svätoboj Longauer ◽  
Mária Fedorová ◽  
...  
Keyword(s):  
Hsla Steel ◽  
Notch Toughness ◽  
Grain Structure ◽  
Surface Zone ◽  
Slab Surface ◽  
Slab Width ◽  
Fine Grain ◽  
Hsla Steels ◽  
Ferrite Structure ◽  
Ferrite Grain Size

The aim of this work was to analyze changes in local toughness KCV using Charpy V-notch impact tests in the slab surface zone in relation to the microstructure in ULC/ IF steel and TiNb HSLA steel. Marked heterogeneity in KCV values was confirmed in the surface zone across the width of transitional slabs. Distinct local differences in notch toughness across the slab width were found to be linked primarily with changes in ferrite grain size. Low KCV values in the analyzed steels were linked with coarse grain structure, while much finer ferrite structure was identified in tough samples. The heterogeneity of KCV vales in the analyzed steels may be influenced by differences in thickness of the fine-grain slab surface zone, and by the presence of tertial cementite and (in HSLA steel) of pearlite as well.

Mechanichal Properties of DGEBA/TEPA Modified Epoxy Resin

2014 ◽  
Vol 775-776 ◽  
pp. 588-592
Author(s):  
Camila Rodrigues Amaral ◽  
Ruben Jesus Sanchez Rodriguez ◽  
Magno Luiz Tavares Bessa ◽  
Verônica Scarpini Cândido ◽  
Sergio Neves Monteiro
Keyword(s):  
Mechanical Properties ◽  
Plastic Deformation ◽  
Epoxy Resin ◽  
Yield Stress ◽  
Diglycidyl Ether ◽  
Notch Toughness ◽  
Epoxy Network ◽  
Structural Network ◽  
Flexural Tests ◽  
Modified Epoxy

The correlation between the structural network of a diglycidyl ether of the bisphenol-A (DGEBA) epoxy resin, modified by two distinct aliphatic amines (tetraethylenepentamine TEPA and jeffamine D230), and its mechanical properties, was investigated as possible matrix for abrasive composites applications. Both flexural tests, to determine the yield stress and the elastic modulus, as well as impact tests to determine the notch toughness, were performed. The DGEBA/D230 presented the highest stiffness and toughness but lowest yield stress. This epoxy network also displayed a greater plastic deformation during fracture.

Notch toughness of Fe-based bulk metallic glass and composites

2011 ◽  
Vol 509 (39) ◽  
pp. 9441-9446 ◽  
Author(s):  
S.F. Guo ◽  
K.C. Chan ◽  
L. Liu
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Notch Toughness

scholarly journals Effect of Heat Treatment in the Ferrite-Austenite Region on Notch Toughness of 6% Nickel Steel

1973 ◽  
Vol 59 (6) ◽  
pp. 752-763 ◽  
Author(s):  
Seinosuke YANO ◽  
Hiroshi SAKURAI ◽  
Hisoshi MIMURA ◽  
Nobuo WAKITA ◽  
Tsutomu OZAWA ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Notch Toughness ◽  
Nickel Steel

Failure Analysis of a Shaft Belonging to a Ship Engine Speed Controller

1999 ◽  
Author(s):  
Miguel V. Figueiredo ◽  
Fernando M. Oliveira ◽  
Paulo T. de Castro ◽  
António A. Fernandes
Keyword(s):  
Electron Microscopy ◽  
Fracture Surface ◽  
Failure Analysis ◽  
Laboratory Tests ◽  
Engine Speed ◽  
Notch Toughness ◽  
Severe Damage ◽  
Speed Controller ◽  
Service Conditions ◽  
Scanning Electron

Abstract The fracture of a shaft belonging to the speed controller of a ship’s engine is presented. An over-speed situation occurred as a result of the fracture of this shaft, which led to severe damage to the engine. The failure examination concentrated first on the study of the available evidence, which included the analysis of the shaft’s material and fracture surface. The shaft’s material was studied as concerns chemical composition, mechanical properties and micrographic structure. The fracture surface was studied using scanning electron microscopy. Several different destructive laboratory tests were conducted on the material, in order to obtain fracture surfaces which could be used for comparison purposes, and thus help to identify the cause of the fracture. The next step of the failure analysis consisted of a stress analysis of the shaft under service conditions. A probable scenario for the failure was proposed, which helped the interested parties to reach an agreement concerning responsibilities for the failure. It was found that the shaft material presented low notch toughness. The stress levels at the time of the accident imply that it is unlikely that the fracture was due to fatigue. The probable cause of the failure was sudden blockage of the shaft.

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