Journal ArticleDOI
Void formation, void growth and tensile fracture of plain carbon steel and a dual-phase steel
S.-K. Han,Harold Margolin +1 more
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In this paper, void nucleation and void growth studies in a 1018 normalized steel and a dual-phase steel were undertaken to determine whether longest voids, determined by serial sectioning, grew linearly with strain or whether growth of these voids accelerated continuously.Abstract:
Void nucleation and void growth studies in a 1018 normalized steel and a dual-phase steel were undertaken to determine whether longest voids, determined by serial sectioning, grew linearly with strain or whether growth of these voids accelerated continuously. For both materials longest-void growth accelerated continuously with strain. This behavior was attributed to an aligned microstructure which favored local multiple-void nucleation, growth and coalescence. The spacing between these localized voids was much smaller than the average spacing between voids.read more
Citations
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Effect of martensite distribution on damage behaviour in DP600 dual phase steels
TL;DR: In this paper, the effect of martensite morphology and distribution in a ferrite matrix on the mechanical properties and the damage accumulation in uniaxial tension was investigated in two different automotive-grade dual phase DP600 steels.
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Void Nucleation and Growth in Dual-Phase Steel 600 during Uniaxial Tensile Testing
TL;DR: In this article, a commercial dual-phase steel in sheet form and comprised of ferrite, martensite, and bainite was subjected to uniaxial tension up to fracture and the damage characteristics were studied through extensive quantitative metallography and scanning electron microscope (SEM) observations of polished sections and fracture surfaces of failed specimens.
Journal ArticleDOI
Ratcheting and low cycle fatigue behavior of SA333 steel and their life prediction
TL;DR: Ratcheting and low cycle fatigue (LCF) experiments have been conducted at 25 °C temperature in laboratory environment under different loading conditions. as mentioned in this paper found that ratcheting strain increases with both increasing mean stress and stress amplitude.
Journal ArticleDOI
Key issues in cyclic plastic deformation: Experimentation
TL;DR: In this paper, different cyclic plastic deformation responses of piping materials (SA333 C-Mn steel and 304LN stainless steel) are experimentally explored, and effects of stress amplitude and mean stress on the ratcheting behaviors are analyzed.
Journal ArticleDOI
Effect of hardness of martensite and ferrite on void formation in dual phase steel
TL;DR: In this article, the influence of the hardness of martensite and ferrite phases in dual phase steel on void formation has been investigated by in situ tensile loading in a scanning electron microscope.
References
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Journal ArticleDOI
The mechanism of void formation, void growth, and tensile fracture in an alloy consisting of two ductile phases
TL;DR: In this article, it was shown that void formation, void growth, and tensile ductility in an α-β titanium alloy, Ti-5.5V-0.9Fe- 0.5Cu, heat treated to a constant yield strength, is intergranular in nature and occurs when a critical crack length-stress relationship is satisfied.
Journal ArticleDOI
Void nucleation in spheroidized carbon steels Part 1: Experimental
J. R. Fisher,J. Gurland +1 more
TL;DR: In this article, a quantitative study of void initiation was performed on low and medium-carbon spheroidized steels deformed uniaxially in tension, and the rate of void nucleation with deformation was determined from the change of areal void density as a function of strain by considering the separate contributions of nucleation and growth.
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Ductile fracture in spheroidized 1520 steel
In-Gyu Park,Anthony W. Thompson +1 more
TL;DR: In this paper, the detailed substeps of the ductile fracture process were characterized by careful sectioning studies and it was found that void initiation appeared to be controlled by a criterion involving stress, void growth was predominantly affected by plastic strain, and additional strain was needed to arrive at final fracture even after the void coalescence stages.
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Investigation of the fracture mechanism in Ti-5Al-2.5Sn at cryogenic temperatures
TL;DR: Fractography and metallographic sectioning were used to investigate the influence of microstructure on the fracture mechanism and fracture toughness (KIC) of normal interstitial and extra low interstitial (ELI) Ti-5Al-25Sn at 20 K (-423 F) and 77 K (-320 F), respectively.
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Void formation, void growth and tensile fracture in Ti-6AI-4V
Harold Margolin,Yashwant Mahajan +1 more
TL;DR: In this article, the influence of microstructure on void formation, void growth and tensile fracture was investigated for the Ti-6A1-4V alloy, aged to yield strengths of approximately 110 ksi (758 MN/m2), 130ksi (896 MN /m2) and 140ksi(965MN/m 2) for both equiaxed (E) and Widmanstatten plus grain boundary (W + GB)α structures.