Low-cycle fatigue properties of ultrafine-grained zinc–22 wt.% aluminum alloy during room-temperature superplastic flow

Tanaka, Tsutomu; Kushibe, Atsumichi; Kohzu, Masahide; Takigawa, Yorinobu; Higashi, Kenji

doi:10.1016/j.scriptamat.2008.03.005

Cited by 10 publications

(4 citation statements)

References 33 publications

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“…When the strain rate was >1 × 10 −1 s −1 , the m -values were small, namely, 0.03 and 0.04 extruded at the temperatures of 350 and 200°C, respectively. In the current study, m -values of Zn–22Al alloys slightly lower than 0.3 of Zn–22Al alloys with room temperature superplasticity [27-30].…”

Section: Resultsmentioning

confidence: 82%

Effect of extrusion temperature on mechanical properties of as-extruded Zn–22Al alloys

Sun

Wang

Yang

et al. 2020

Materials Science and Technology

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The effect of extrusion temperature on the microstructures and mechanical properties of as-extruded Zn–22Al alloys was investigated in this study. With decrease of extrusion temperature from 350 to 200°C, the elongation of as-extruded Zn–22Al alloys increases remarkably at low strain rate and has no change at high strain rate, which implies that the Zn–22Al alloys extruded at lower temperature exhibit high-ductility behaviour. X-ray diffraction and electron back-scattered diffraction analysis demonstrated that the maximum elongation of Zn–22Al alloys extruded at the extrusion temperature of 200°C can be attributed to the elimination of the lamellar structure and the refinement in grain size of the Zn-rich phase.

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Section: Resultsmentioning

confidence: 82%

Effect of extrusion temperature on mechanical properties of as-extruded Zn–22Al alloys

Sun

Wang

Yang

et al. 2020

Materials Science and Technology

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“…32 The hindering effect of secondary cracks on crack propagation has been reported in previous work. [33][34][35] The FCPR of the 990 C/0.5 h-FC sample is lower in the early stage of crack propagation and Paris region due to the consumption of energy by the secondary cracks and branches, which reduces the energy available for main crack propagation.…”

Section: Secondary Crackmentioning

confidence: 99%

Resistance of fatigue crack propagation induced by large α colony in a Ti‐Al‐V‐Mo‐Zr alloy

Liu,

Peng,

Wang

et al. 2024

Fatigue Fract Eng Mat Struct

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For Ti alloys used in oil drilling pipe, the fatigue crack propagation (FCP) resistance is one of the key properties for petroleum industrial applications. In this work, the fatigue crack propagation behaviors of bimodal, equiaxed, lamellar, and Widmanstatten microstructures have been systematically investigated and characterized by SEM and EBSD. The results show that the Widmanstatten microstructure containing α colonies has higher yield strength (877 MPa), moderate elongation (9.3%), and better FCP resistance compared to other specimens. During the process of crack propagation, the large α colonies can effectively deflect the cracks and induce secondary cracks, which significantly impedes the main crack propagation. Additionally, tensile twinning can occasionally occur within the large α colony along the crack, improving the plasticity of the crack tip and resulting in a decrease in fatigue crack propagation rate (FCPR).

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“…The yield stress of such steels can escalate under repeated loads or seismic events, requiring post-earthquake maintenance Materials 2024, 17, 2141 2 of 21 to restore their designed performance. Tanaka et al reported that in some cases, the yield stress of dampers increased from 125 MPa to 180 MPa following a major earthquake [12]. Hence, post-earthquake maintenance is essential for these dampers to restore their original performance as designed.…”

Section: Introductionmentioning

confidence: 99%

Low-Cycle Fatigue Behavior and the Combined Cyclic Hardening Material Model of Plate-Shaped Zn-22Al Alloy for Seismic Dampers

Liu,

Han,

Yang

2024

Materials

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This study investigates the potential of the plate-shaped Zn-22 wt.% Al (Zn-22Al) alloy as an innovative energy dissipation material for seismic damping devices, since plate-shaped material is more suitable to fabricate large-scale devices for building structures. The research begins with the synthesis of Zn-22Al alloy, given its unavailability in the commercial market. Monotonic tensile tests and low-cycle fatigue tests are performed to analyze material properties and fatigue performance of plate-shaped specimens. Monotonic tensile curves and cyclic stress–strain curves, along with SEM micrographs for microstructure and fracture surface analysis, are acquired. The combined cyclic hardening material model is calibrated to facilitate finite element analysis. Experimental results reveal exceptional ductility in Zn-22Al alloy, achieving a fracture strain of 200.37% (1.11 fracture strain). Fatigue life ranges from 1126 to 189 cycles with increasing strain amplitude (±0.8% to ±2.5%), surpassing mild steel by at least 6 times. The cyclic strain–life relationships align well with the Basquin–Coffin–Manson relationship. The combined kinematic/isotropic hardening model in ABAQUS accurately predicts the hysteretic behavior of the material, showcasing the promising potential of Zn-22Al alloy for seismic damping applications.

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Low-cycle fatigue properties of ultrafine-grained zinc–22 wt.% aluminum alloy during room-temperature superplastic flow

Cited by 10 publications

References 33 publications

Effect of extrusion temperature on mechanical properties of as-extruded Zn–22Al alloys

Effect of extrusion temperature on mechanical properties of as-extruded Zn–22Al alloys

Resistance of fatigue crack propagation induced by large α colony in a Ti‐Al‐V‐Mo‐Zr alloy

Low-Cycle Fatigue Behavior and the Combined Cyclic Hardening Material Model of Plate-Shaped Zn-22Al Alloy for Seismic Dampers

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