Abstract
Micrometer scale gear was manufactured by new micro-precision casting technology based on metal mold, and its hardness and elastic modulus were measured by nanoindentation. The results show, that the hardness of microcastings is dependent on the grain size, and decreases with the increase of the grain size. Value of elastic modulus scattered. The hardness of microcastings is higher than that of conventional castings, the maximum up to 1.70 times, but the elastic modulus decreases by about 50%. The property change is caused by the microstructure of non-equilibrium solidification from rapid cooling.
| Original language | English |
|---|---|
| Pages (from-to) | 231-236 |
| Number of pages | 6 |
| Journal | Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals |
| Volume | 18 |
| Issue number | 2 |
| State | Published - Feb 2008 |
Keywords
- Elastic modulus
- Micro-precision casting
- Nanohardness
- Nanoindentation
- ZnAl4 alloy
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