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Article
Microstructure and fatigue resistance of high strength dual phase steel welded with gas metal arc welding and plasma arc welding processes
This study presents the microstructure and high cycle fatigue performance of lap shear joints of dual phase steel (DP590) welded using gas metal arc welding (GMAW) and plasma arc welding (PAW) processes. High ...
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Article
The effect of lamellar morphology on tensile and high-cycle fatigue behavior of orthorhombic Ti-22Al-27Nb alloy
The room-temperature tensile and high-cycle fatigue (HCF) behavior of orthorhombic Ti-22Al-27Nb alloy with varying lamellar morphology was investigated. Varying lamellar morphology was produced by changing the...
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Article
Normalized coffin-manson plot in terms of a new life function based on stress relaxation under creep-fatigue conditions
A new life prediction function based on a model formulated in terms of stress relaxation during hold time under creep-fatigue conditions is proposed. From the idea that reduction in fatigue life with hold is d...
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Article
Improvement of creep-fatigue life by the modification of carbide characteristics through grain boundary serration in an AISI 304 stainless steel
The modification of carbide characteristics through grain boundary serration and its subsequent effect on the creep-fatigue property at 873 K have been investigated, using an AISI 304 stainless steel. It was f...
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Article
The effect of hold time and waveform on the high-temperature, low-cycle fatigue properties of a Nb-A286 alloy
The effect of hold time and waveform on the high-temperature, low-cycle fatigue (HTLCF) of a Nb-modified A286 alloy was investigated at 650 °C. It was found that the fatigue life with strain hold was lower tha...
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Article
Nitrogen-doped TiAl alloys Part II Plastic deformation behavior
Effects of the nitrogen addition on high temperature tensile properties and creep resistance of the fully lamellar and the duplex Ti-48.5Al-1.5Mo (at.%) alloy were investigated. High temperature yield strength...
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Article
A model for creep-fatigue interaction in terms of crack-tip stress relaxation
A model was developed to explain the mechanism of the degradation of fatigue lives caused by the growth of transgranular crack without cavitational damage in spite of the creep-fatigue loading condition for so...
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Article
Life extension by cavity annihilation heat treatment in AISI 316 stainless steel under creep-fatigue interaction conditions
The creep-fatigue life extension of AISI 316 austenitic stainless steel by heat treatment for cavity annihilation was investigated. Different heat treatments were conducted to find better conditions which coul...
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Article
The effect of Mn on the mechanical behavior of Al alloys
Manganese has been known to be an alloying element of Al alloys that contributes to uniform deformation. Recently, it was found that as the manganese content increases over 0.5 wt.% in such aluminum alloys as ...
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Article
Low-cycle fatigue crack initiation and break in strain-life curve of Al-Li 8090 alloy
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Article
Primary creep deformation behaviors related with lamellar interface in TiAl alloy
Constant tensile stress creep tests under the condition of 760~816°C/172~276 MPa in an air environment are conducted, and the microstructural evolution during primary creep deformation at the creep condition o...
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Article
Characterization of the cavity nucleation factor for life prediction under creep-fatigue interaction
It is understood that grain boundary cavitation is one of the detrimental processes for the degradation of materials that reduces the creep-fatigue life at high temperatures. In a previous investigation, a mod...
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Article
Study on the solidification cracking behaviour of high strength aluminum alloy welds: Effects of alloying elements and solidification behaviours
The solidification cracking susceptibility of the 7000 series Al-Zn-Mg high strength aluminum alloy has been studied. The cracking behaviour of the specimens were evaluated by a Tig-a-Ma-Jig Varestraint test p...
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Article
The normalized coffin- manson plot in terms of a new damage function based on grain boundary cavitation under creep- fatigue condition
A new damage function based on a model for the creep-fatigue life prediction in terms of nucleation and growth of grain boundary cavities is proposed. This damage function is a combination of the terms related...
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Article
Effect of Mn dispersoid on the fatigue crack propagation of Al-Zn-Mg alloys
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Article
Identification of Mn-dispersoid in Al-Zn-Mg-Mn alloy
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Article
Effects of manganese dispersoid on the mechanical properties in Al-Zn-Mg alloys
In order to investigate the strengthening effect of manganese dispersoid in manganeseadded Al-Zn-Mg alloys, specially designed alloys with various manganese content were prepared and evaluated. The manganese d...
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Article
Role of Mn-dispersoid in the fracture toughness enhancement of Al-Zn-Mg-(Mn) alloys
The effects of Mn dispersoid and fabrication methods on the fracture toughness in peak aged Al-Zn-Mg-(Mn) alloys have been studied. Sphere- or rod-shaped Mn dispersoids of the size in range from 0.05 μm to 0.5...
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Article
Effect of mn-dispersoid on the low-cycle fatigue life of Al-Zn-mg alloys
It is well known that a small amount of transition elements added to 7xxx alloy plays an interesting role in
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Article
A correlation between creep-fatigue life and tensile hold time for austenitic stainless steels
