Mechanical Characterization of The Plastic Deformation Behavior of AZ31 Magnesium Alloy Processed Through Spinning Using Nanoindentation

Zhang, Jie; Wang, Wenxian; Zhang, Tingting; Zhang, Yan; Shi, Ning

doi:10.1007/s12666-021-02218-5

Cited by 5 publications

(2 citation statements)

References 31 publications

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“…The residual stress (Figure 10c,d) could also affect the h f / h max ratios. [ 55 ] Hence, an increasing trend in the h f / h max ratios is observed in zones I–IV, and subsequently, a negligible variation is found in zone V (Figure 15). Zhang et al [ 55 ] calculated the plastic and elastic energy (from loading–unloading curves) of the AZ31 Mg alloy processed through spinning and found that a deformed surface region exhibits maximum elastic energy compared to the core region.…”

Section: Resultsmentioning

confidence: 95%

“…[ 55 ] Hence, an increasing trend in the h f / h max ratios is observed in zones I–IV, and subsequently, a negligible variation is found in zone V (Figure 15). Zhang et al [ 55 ] calculated the plastic and elastic energy (from loading–unloading curves) of the AZ31 Mg alloy processed through spinning and found that a deformed surface region exhibits maximum elastic energy compared to the core region. In the current work, the h f / h max ratio varies from ≈0.72 (near the surface) to ≈0.82 (at ≈1100 μm depth) for the LSA specimen; it is ranged between ≈0.71 (near the surface) and ≈0.85 (at ≈3400 μm depth) for the HSA specimen.…”

Section: Resultsmentioning

confidence: 99%

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Gradient Microstructure and Properties of Surface Mechanical Attrition–Treated AZ91D Alloy: An Effect of Colliding Balls Velocity

et al. 2023

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The surface properties of the AZ91D alloy are altered using surface mechanical attrition treatment (SMAT), a promising method of severe surface deformation, where the role of process parameters is crucial. In this study, specimens are SMATed using ≈3 and ≈10 m s−1 ball velocities (maintaining a constant percentage coverage). The SMATed specimens show higher twin density near the surface, which is reduced gradually, and twin thickness is increased with increasing depth. Further, high‐velocity balls cause more twin density and better grain refinement (≈32 nm grain size at the surface). The higher ball velocity helps form a considerably thicker gradient layer (≈3500 μm) with higher hardness (≈1.98 GPa) and compressive residual stress (≈281 MPa) within a shorter SMAT duration (≈10 min). Ball velocity also influences nanomechanical properties such as nanohardness, creep resistance, strain rate sensitivity (SRS), etc. The non‐SMATed alloy's SRS is about 0.037–0.040. The gradient microstructure affects SRS. The SRS value near the SMATed surface (where the reduced grain size plays a dominating role) is about 0.018–0.027; however, it drops suddenly to ≈0.01 (with a slight increase in depth), and subsequently, it rises with an increased distance in the SMATed layer (where twins play a dominating role).

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Section: Resultsmentioning

confidence: 95%

Section: Resultsmentioning

confidence: 99%