Ultrasound-Assisted Solidification of a Cu–Cr Alloy

Siruo Zhang, Huijun Kang, Min Cheng, Zongning Chen, Zhicheng Wang, Enyu Guo, Jiehua LI, Tongmin Wang

Research output: Contribution to journalArticleResearchpeer-review


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.
Original languageEnglish
Pages (from-to)2082-2088
Number of pages7
JournalActa metallurgica Sinica (English letters)
Issue number12
Early online date3 Jul 2022
Publication statusPublished - 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.


  • Acoustic cavitation
  • Cu–Cr alloys
  • Microstructure
  • Solidification process
  • Ultrasonic vibration

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