Abstract
Ultrasonic cavitation radiates huge power in a small solidifying bulk, leading to significant grain refinement, purification and
homogenization of the final alloys. Ultrasound vibration has mostly been used for treating the solidification of light metals,
but it is difficult to directly introduce ultrasonic vibration into copper alloy due to the lack of proper sonotrode. In this work,
we have used a Sialon ceramic sonotrode to propagate acoustic waves in a Cu–Cr alloy melt. Significant grain refinement
and modification of primary Cr have been obtained. With the ultrasound vibration treatment, the mechanical properties of
the as-cast Cu–Cr alloy have been improved. The wear resistance of the Cu–Cr alloy has also shown enhancement with
respect to the untreated alloy.
homogenization of the final alloys. Ultrasound vibration has mostly been used for treating the solidification of light metals,
but it is difficult to directly introduce ultrasonic vibration into copper alloy due to the lack of proper sonotrode. In this work,
we have used a Sialon ceramic sonotrode to propagate acoustic waves in a Cu–Cr alloy melt. Significant grain refinement
and modification of primary Cr have been obtained. With the ultrasound vibration treatment, the mechanical properties of
the as-cast Cu–Cr alloy have been improved. The wear resistance of the Cu–Cr alloy has also shown enhancement with
respect to the untreated alloy.
| Original language | English |
|---|---|
| Pages (from-to) | 2082-2088 |
| Number of pages | 7 |
| Journal | Acta metallurgica Sinica (English letters) |
| Volume | 35.2022 |
| Issue number | 12 |
| Early online date | 3 Jul 2022 |
| DOIs | |
| Publication status | Published - Dec 2022 |
Bibliographical note
Funding Information:This work was financially supported by the National Key Research and Development Program of China (No. 2021YFA1600702), the National Natural Science Foundation of China (Nos. 51971051, 51971052, 51927801 and 52174356), the LiaoNing Revitalization Talents Program (No. XLYC1808005), the Innovation Foundation of Science and Technology of Dalian (Nos. 2019RQ043, 2020JJ25CY002 and 2020J12GX037) and the Fundamental Research Funds for the Central Universities (No. DUT20TD04). Jiehua Li acknowledges the financial support from Austrian Science Fund (FWF) (P 32378-N37) and BMBWF (KR 06/2020).
Publisher Copyright:
© 2022, The Chinese Society for Metals (CSM) and Springer-Verlag GmbH Germany, part of Springer Nature.
Keywords
- Acoustic cavitation
- Cu–Cr alloys
- Microstructure
- Solidification process
- Ultrasonic vibration