scholarly journals Determination of the Mechanical Properties of Extruded Pure Magnesium During Tension–Tension Low-Cycle Fatigue Using Ultrasonic Testing

2010 ◽  
Vol 51 (11) ◽  
pp. 2025-2032 ◽  
Author(s):  
Hideki Yamagishi ◽  
Mikio Fukuhara ◽  
Akihiko Chiba
Keyword(s):  
Mechanical Properties ◽  
Ultrasonic Testing ◽  
Low Cycle Fatigue ◽  
Pure Magnesium ◽  
Cycle Fatigue

scholarly journals The Reliability of the Results of the Modified Low-cycle Fatigue Test for Cast Iron Evaluated by Metallographic Studies

2015 ◽  
Vol 15 (1) ◽  
pp. 41-46
Author(s):  
M. Maj ◽  
K. Pietrzak
Keyword(s):  
Mechanical Properties ◽  
Cast Iron ◽  
Light Microscopy ◽  
Fatigue Test ◽  
Low Cycle Fatigue ◽  
Scanning Microscopy ◽  
Cycle Fatigue ◽  
Characteristic Features

Abstract This study discloses the characteristic features of the modified low-cycle fatigue test used for the determination of the mechanical properties of two types of cast iron, i.e. EN-GJL-250 and EN-GJS-600-3. For selected materials, metallographic studies were also conducted in the range of light microscopy and scanning microscopy.

scholarly journals STUDY OF MECHANICAL PROPERTIES AND STRUCTURE OF LARGE-SIZED SEMI-FINISHED PRODUCTS MADE OF VT6ch TITANIUM ALLOY

2020 ◽  
pp. 12-18
Author(s):  
A.L. Yakovlev ◽  
◽  
A.A. Arislanov ◽  
S.V. Putyrskiy ◽  
N.A. Nochovnaya ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Titanium Alloy ◽  
Comparative Analysis ◽  
Impact Strength ◽  
Low Cycle Fatigue ◽  
Cycle Fatigue ◽  
Structural Components ◽  
Final Deformation

The article presents the results of a complex of studies (analysis of microstructure, as well as determination of mechanical properties under tension, impact strength (KCU), low-cycle fatigue (LCF), fracture toughness (K1с)) of large-sized forgings made of titanium alloy Vt6сh, providing for the final deformation in the (α+β)-region, as well as large-sized profiles and stamping made of titanium alloy Vt6сh, providing for the final deformation in the β-region. A comparative analysis of the data obtained during the research shows the dependence of the mechanical properties of semi-finished products with plate-like structure on the size of the structural components – of primary β-grains and colonies of α-plates. This is especially noticeable for the characteristics of plasticity.

Evaluation of the Heat Treatment Role for Light Aluminum Alloys Subjected to Creep and Low Cycle Fatigue

2010 ◽  
Vol 638-642 ◽  
pp. 455-460 ◽  
Author(s):  
A. Rutecka ◽  
L. Dietrich ◽  
Zbigniew L. Kowalewski
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Low Cycle Fatigue ◽  
Numerical Models ◽  
Cyclic Hardening ◽  
Fatigue Tests ◽  
Cycle Fatigue ◽  
Lower Stress ◽  
Creep Tests ◽  
Different Temperatures

The AlSi8Cu3 and AlSi7MgCu0.5 cast aluminium alloys of different composition and heat treatment were investigated to verify their applicability as cylinder heads in the car engines [1]. Creep tests under the step-increased stresses at different temperatures, and low cycle fatigue (LCF) tests for a range of strain amplitudes and temperatures were carried out. The results exhibit a significant influence of the heat treatment on the mechanical properties of the AlSi8Cu3 and AlSi7MgCu0.5. An interesting fact is that the properties strongly depend on the type of quenching. Lower creep resistance (higher strain rates) and lower stress response during fatigue tests were observed for the air quenched materials in comparison to those in the water quenched. Cyclic hardening/softening were also observed during the LCF tests due to the heat treatment applied. The mechanical properties determined during the tests can be used to identify new constitutive equations and to verify existing numerical models.

scholarly journals Mechanical Properties and Low Cycle Fatigue Strength at 4 and 300 K of Welded Alloy A286

1987 ◽  
Vol 73 (14) ◽  
pp. 1770-1777 ◽  
Author(s):  
Keijiro HIRAGA ◽  
Toshio OGATA ◽  
Kotobu NAGAI ◽  
Tetsumi URI ◽  
Keisuke ISHIKAWA ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Fatigue Strength ◽  
Low Cycle Fatigue ◽  
Cycle Fatigue

Model of the Deformation Process under Thermo-Mechanical Fatigue Conditions

2012 ◽  
Vol 726 ◽  
pp. 143-149
Author(s):  
Jerzy Okrajni ◽  
Grzegorz Junak
Keyword(s):  
Deformation Process ◽  
Low Cycle Fatigue ◽  
Hysteresis Loops ◽  
Fatigue Tests ◽  
Mathematical Representation ◽  
Deformation Characteristics ◽  
Cycle Fatigue ◽  
Calculation Algorithm ◽  
Mechanical Fatigue

The paper focuses on the development of a mathematical representation of deformation characteristics under the conditions of an elevated changeable temperature and mechanical loads. The method proposed in the paper is based on the use of characteristics determined in low-cycle fatigue tests at constant temperatures. Hysteresis loops reflecting the behaviour of a material under the conditions of low-cycle loads at an elevated temperature were primarily used. The effect of relaxation on the course of the hysteresis loop was taken into account. The steady state of the material is referred to in the proposed representation. A calculation algorithm was developed to enable the determination of the stress value for subsequent increases of strain over time. The results obtained were compared with experimentally determined characteristics.

scholarly journals Experimental determination of entropy and exergy in low cycle fatigue

2020 ◽  
Vol 136 ◽  
pp. 105333 ◽  
Author(s):  
Patrick Ribeiro ◽  
Johann Petit ◽  
Laurent Gallimard
Keyword(s):  
Experimental Determination ◽  
Low Cycle Fatigue ◽  
Cycle Fatigue

The Issue of Low Cycle Fatigue Scope in the Description of Two-Parameter Fatigue Characteristics

2014 ◽  
Vol 598 ◽  
pp. 225-230
Author(s):  
Grzegorz Szala
Keyword(s):  
High Cycle Fatigue ◽  
Low Cycle Fatigue ◽  
Constructional Steel ◽  
Evaluation Criterion ◽  
Cycle Fatigue ◽  
Fatigue Characteristics ◽  
Two Parameter

This paper discusses the issue connected with determination of the low cycle fatigue scope for the two-parameter fatigue characteristics. Low cycle fatigue (LCF) and high cycle fatigue (HCF) evaluation criterion for constructional steel (C45, S355J0 and 41Cr4) has been discussed.

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