Fatigue Behavior of Ultra-Fine Grained Ti-6Al-4V Alloy

2014 ◽  
pp. 33-51
Author(s):  
R. Ebara ◽  
M. Endo ◽  
H. J. Kim ◽  
J. Nakahigashi
Keyword(s):  
Fatigue Behavior ◽  
Fine Grained

scholarly journals The influence of metallurgical factors on low cycle fatigue behavior of ultra-fine grained 6082 Al alloy

2018 ◽  
Vol 110 ◽  
pp. 130-143 ◽  
Author(s):  
N. Kumar ◽  
S. Goel ◽  
R. Jayaganthan ◽  
G.M. Owolabi
Keyword(s):  
Low Cycle Fatigue ◽  
Fatigue Behavior ◽  
Al Alloy ◽  
Cycle Fatigue ◽  
Fine Grained ◽  
6082 Al Alloy

Hybrid Design Concept Using High-Strength Cast Steel Inserts for Tubular Joints of Offshore Structures

1998 ◽  
Vol 120 (1) ◽  
pp. 10-19 ◽  
Author(s):  
C. M. Sonsino ◽  
R. Umbach
Keyword(s):  
Fatigue Life ◽  
Crack Initiation ◽  
Large Scale ◽  
Fatigue Behavior ◽  
Cast Steel ◽  
High Strength ◽  
Offshore Structures ◽  
Fine Grained ◽  
Tubular Joints ◽  
Medium Strength

In a joint project of a German working group supported by the ECSC and the Studiengesellschaft fu¨r Stahlanwendung e.V., the fatigue behavior of large-scale hybrid tubular joints with inserts manufactured from the high-strength cast steel GS-12 MnMo 7 4 welded into tubular members formed from the fine-grained steel StE 500 were compared to the behavior of large-scale welded tubular joints. The latter were made from medium-strength fine-grained steel StE 355 and high-strength StE 690. In addition, data from hybrid joints with cast steel inserts of medium-strength GS-8 Mn 7 welded into StE 355 tubulars is available for comparison. The tests were carried out under variable amplitude loading in artificial seawater. The results were evaluated for the failure criteria fatigue life to crack initiation (a = 1 mm) and through crack. With medium-strength (Rp0.2 > 355 N/mm2) hybrid tubulars, where by the use of cast steel inserts the welds were removed into areas of lower stress concentration, fatigue lives higher than a factor of 100 were achieved compared to the welded nodes, even those made from StE 690. However, by the use of high-strength (Rp0.2 > 500 N/mm2) cast steel inserts and tubular members of corresponding strength, the fatigue life to crack initiation was improved by a factor of two despite a thickness reduction compared to the medium-strength design. Post-weld treatments of the welded tubulars without cast steel inserts like shot-peening, TIG-dressing, or their combination resulted only in a slight increase of fatigue life. The results of this investigation do not only show how to improve the fatigue life by a new design using cast steel inserts, but indicate also how to revise design codes from the point of damage calculation (damage sum of 0.50 for welded nodes and 0.25 for cast steel inserts instead of the conventional value of 1.00), as well as consideration of fatigue life to initiation of a technically detectable crack with a defined depth e.g., a = 1 mm.

Fatigue Behavior of Ultra-Fine Grained Ti-6Al-4V Alloy

2014 ◽  
pp. 31-51
Author(s):  
R. Ebara ◽  
M. Endo ◽  
H.J. Kim ◽  
J. Nakahigashi
Keyword(s):  
Fatigue Behavior ◽  
Fine Grained

Low-cycle fatigue behavior and life prediction of fine-grained 316LN austenitic stainless steel

2020 ◽  
Vol 35 (23-24) ◽  
pp. 3180-3191
Author(s):  
Zhe Zhang ◽  
An Li ◽  
Yanping Wang ◽  
Qiang Lin ◽  
Xu Chen
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Life Prediction ◽  
Low Cycle Fatigue ◽  
Fatigue Behavior ◽  
Cycle Fatigue ◽  
Fine Grained

Abstract

Thermal Fatigue Behavior of Ladle Purging Plug

2010 ◽  
Vol 105-106 ◽  
pp. 158-161
Author(s):  
Hui Zhang ◽  
Yan Ruo Hong ◽  
Hong Xia Li ◽  
Yang Bin
Keyword(s):  
Thermal Shock ◽  
Thermal Fatigue ◽  
Thermal Shock Resistance ◽  
Fatigue Behavior ◽  
Modulus Of Rupture ◽  
Coarse Grained ◽  
Fine Grained ◽  
Shock Resistance ◽  
Thermal Fatigue Behavior ◽  
Fracture Damage

The thermal fatigue behavior of alumina-magnesia based and alumina-chromia based purging plug materials are comparatively studied. By comparing thermal shock parameters, the changes of elastic modulus and hot modulus of rupture after thermal shock cycles, we come to a conclusion that microcracks emerge in the alumina-magnesia based material, which hinder the crack growth during thermal shock cycles. The fine-grained and network structure of alumina-magnesia based material are also helpful to improve thermal shock resistance. However, cracks are difficult to form in the alumina-chromia based material but it tends to fracture damage quickly once the cracks nucleation due to coarse-grained structure of alumina-chromia based material.

The fatigue behavior of fine grained two-phase alloys

1973 ◽  
Vol 4 (2) ◽  
pp. 561-568 ◽  
Author(s):  
H. W. Hayden ◽  
S. Floreen
Keyword(s):  
Fatigue Behavior ◽  
Two Phase ◽  
Fine Grained

The effect of inclusions on the fatigue behavior of fine-grained high strength 42CrMoVNb steel

2004 ◽  
Vol 26 (9) ◽  
pp. 959-966 ◽  
Author(s):  
Z.G Yang ◽  
G Yao ◽  
G.Y Li ◽  
S.X Li ◽  
Z.M Chu ◽  
...  
Keyword(s):  
Fatigue Behavior ◽  
High Strength ◽  
Fine Grained
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