Effect of area fraction and morphology of silicon particles on fracture behaviour of hypoeutectic Al-Si alloys under resonant vibration

Horng, Jeng Haur; Lui, Truan-Sheng; Chen, Lihui

doi:10.1080/13640461.2001.11819430

Cited by 6 publications

(4 citation statements)

References 21 publications

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“…The feature can be described from the beginning as follows: Region I, with increasing deflection amplitude, Region II, with a constant deflection amplitude and Region III with descending deflection amplitude. Based on our previous investigations 5,6,13) and observed evidence as shown in Fig. 5(a), strainhardening results in an ascending deflection in the early stage of the D-N curve (Region I) and the deformation is mainly localized in the vicinity of graphite nodules due to the stress concentration effect under cyclic loading on the surface ( Fig.…”

Section: Resonant Vibration and Tensile Testsmentioning

confidence: 99%

Effect of Nodular Graphite on the Deterioration of Vibration Fracture Resistance of Ferritic Cast Iron under an Aqueous Environment

et al. 2003

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An intergranular fracture feature could be observed when ferritic spheroidal graphite cast irons were tested under continuously wet conditions. The maximum depth of intergranular fractures was closely related to the microstructural feature and ambient environment that caused the deterioration in vibration fracture resistance. Experimental evidence has confirmed the overall D-N curves can be generalized into three characteristic regions. Intergranular fractures occurred in the vicinity of the surface; the existence of nodular graphite act as porosity should be considered as a dominant microstructural factor on the initiation of intergranular fractures. On the other hand, intergranular fractures can be prevented resulting in better vibration fracture resistance when a specimen of ferritic SG cast iron is covered with oil film, or if an identical test is performed using the Fe-3Si steel specimen containing no nodular graphite.

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Section: Resonant Vibration and Tensile Testsmentioning

confidence: 99%

Effect of Nodular Graphite on the Deterioration of Vibration Fracture Resistance of Ferritic Cast Iron under an Aqueous Environment

et al. 2003

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“…For many engineering materials, the vibration fracture resistance increases with increasing the tensile deforma tion resistance and Young's modulus of the material in question. 27,28) However, this is not true for all materials. 29,30) The most likely explanation for this is that vibration testing not only involves fatigue, but also involves a vibration force with a frequency of $10 2 Hz, unlike tensile testing which has a strain rate of $10 À3 s À1 .…”

Section: Resultsmentioning

confidence: 89%

The Recrystallization of Microelectronic Lead-Free Solders

et al. 2008

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In Sn-2 mass%Ag-0.5 mass%Cu solder alloy, recrystallization was induced by thermal cycles and the homogenized effect of thermal aging promoted the vibration resistance. Due to the inner stress induced by thermal cycles, the thermal cycle specimen not only possessed a finer structure but also a large number of grain boundaries that were able to increase the vibration life. During vibration, dynamic recrystallization (DRX) was able to occur. In addition, DRX and grain growth had an obvious tendency to increase as the tensile strain rate was increased in the Sn-1 mass%Ag-0.5 mass%Cu solder alloy with a high -Sn content. Also, high temperatures and plastic deformation had a significant influence on the recrystallization of the solders.

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“…For many engineering materials, the vibration fracture resistance increases with increasing the tensile deformation resistance and Young's modulus of the materials. 20,21) However, this is not true for all materials. [22][23][24] The most likely explanation for this is that vibration testing not only involves fatigue, but also involves a vibration force with frequency of $10 2 Hz, unlike tensile testing which has a strain rate of $10 À3 s À1 .…”

Section: Vibration Behaviorsmentioning

confidence: 89%

Deformation Fracture Characteristics of Microelectronic Sn-3.0Ag-0.5Cu-<I>x</I>Ni Solders

et al. 2007

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The effect of Ni content on the microstructure, as well as the tensile and vibration fracture mechanisms of a potential lead-free solder, Sn-3.0Ag-0.5Cu-xNi (0.02, 0.07, 0.1, 0.2 and 0.3 mass%), are examined in this study. The results show that both Sn-Ni-Cu and Sn-Cu-Ni-Ag intermetallic compounds (IMC) increased with increasing the Ni content. The IMCs mostly formed in the eutectic zones and a few in proeutectic Sn-rich phases. Notably, the Ni content of the bar-like Sn-Ni-Cu compounds was higher than that of the particle-like Sn-Cu-Ni-Ag compounds. In addition, the tensile deformed resistance of Sn-3.0Ag-0.5Cu-xNi solders decreased when the Ni content was increased. Adding Ni obtained finer structures, however the hard massive Sn-Ni-Cu in the eutectic zone deteriorated the tensile deformation resistance. For the lower Ni content specimens, the 0.07Ni specimen not only possessed finer structures but a large number of compounds which congregated were able to increase the crack tortuosity, which in turn increased the crack propagation resistance and the vibration life.

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Effect of area fraction and morphology of silicon particles on fracture behaviour of hypoeutectic Al-Si alloys under resonant vibration

Cited by 6 publications

References 21 publications

Effect of Nodular Graphite on the Deterioration of Vibration Fracture Resistance of Ferritic Cast Iron under an Aqueous Environment

Effect of Nodular Graphite on the Deterioration of Vibration Fracture Resistance of Ferritic Cast Iron under an Aqueous Environment

The Recrystallization of Microelectronic Lead-Free Solders

Deformation Fracture Characteristics of Microelectronic Sn-3.0Ag-0.5Cu-<I>x</I>Ni Solders

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