Microhardness and elastic modulus of nanocrystalline Al-Zr
- Northwestern Univ., Evanston, IL (United States). Dept. of Science and Engineering
- Argonne National Lab., IL (United States); and others
An investigation of the mechanical properties of nanocrystalline Al-Zr alloy composites has been conducted via nanoindentation and Vickers microhardness experiments. The microhardness of the samples exhibits a four-fold increase over the concentration range of 0-30 wt.% Zr, from {approximately}0.7 GPa to nearly 3 GPa. The aluminum grain size is found to be strongly correlated with the level of zirconium present in the samples, suggesting that the observed hardness increase can be attributed to the combined effects of alloying and grain size reduction. The elastic moduli of the nanocrystalline Al-Zr samples are determined to be similar to the modulus of coarse-grained aluminum and independent of zirconium content.
- Research Organization:
- Argonne National Lab., IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 193907
- Report Number(s):
- ANL/MSD/CP--88481; CONF-951026--6; ON: DE96005215
- Country of Publication:
- United States
- Language:
- English
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