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T. SAKAI1,* , J.-I. KOYAMA2
Local mechanical properties such as complex elastic modulus Er and hardness H of a 96Mg-3Al-1Zn magnesium alloy (JIS-AZ31) were obtained by high-resolution AFM Nano-indentation complex apparatus. And surface irregularities of the grain shape were evaluated with an analytical procedure developed by applying fractal concepts and the Richardson effect. Important results of this study can be summarized as follows. (1) The fractal dimension, the SEM-EBSD analysis result, and microscopic mechanical properties are deeply related with one another. (2) The Mg alloy grain shape presents a Richardson effect. It can be expressed well quantitatively using the fractal dimension. (3) Detailed investigation of mechanical property distribution in the thickness direction revealed that complex elastic modulus distributes over about 45.0-50.0GPa, and that it is governed by the intragrain properties. (4) Microscopic mechanical properties in a single crystal grain indicate that the complex elastic modulus near grain boundaries is smaller than in the intragrain region because of the multiplication and accumulation of dislocations.
Magnesium alloy, SEM-EBSD analysis, Nano-indentation test, Fractal analysis, Grain behavior.
T. SAKAI, J.-I. KOYAMA, Microscopic mechanical properties for grain behavior of 96Mg-3Al-1Zn magnesium alloy with bending, Optoelectronics and Advanced Materials - Rapid Communications, 4, 7, July 2010, pp.982-985 (2010).
Submitted at: May 23, 2010
Accepted at: July 14, 2010
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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