Mechanical Properties of AZ91 Studied by Indentation Tests The University of Auckland

Format:

Conference/Event

Author/Creator:

Chung, C. W., author.

Conference Name:

SAE World Congress & Exhibition (2008-04-14 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2008

Summary:

The present work investigated the microstructure and nanomechanical properties of cast magnesium alloy (AZ91). The microstructural features, particularly the morphology and the distribution of Mg12Al17 (β phase) precipitates have been studied using electron microscopy, while the nanomechanical properties of the matrix (α-phase) and the β precipitates have been studied using depth sensing nanoindentation technique. The effect of strain rate on the hardness and elastic modulus of the β precipitates has been evaluated. The modulus of the β precipitates has been found to be about 30GPa higher than that of the matrix while the hardness of the β precipitates can be about 3 times of that of the matrix, depending on the loading schemes. The macroscopic strengthening effect caused by the β precipitates will also be discussed in conjunction with the microstructure features

Notes:

Vendor supplied data

Publisher Number:

2008-01-0374

Access Restriction:

Restricted for use by site license