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Title: Bulk ultrafine grained/nanocrystalline metals via slow cooling

Abstract

Cooling, nucleation, and phase growth are ubiquitous processes in nature. Effective control of nucleation and phase growth is of significance to yield refined microstructures with enhanced performance for materials. Recent studies reveal that ultrafine grained (UFG)/nanocrystalline metals exhibit extraordinary properties. However, conventional microstructure refinement methods, such as fast cooling and inoculation, have reached certain fundamental limits. It has been considered impossible to fabricate bulk UFG/nanocrystalline metals via slow cooling. Here, we report a new discovery that nanoparticles can refine metal grains to ultrafine/nanoscale by instilling a continuous nucleation and growth control mechanism during slow cooling. The bulk UFG/nanocrystalline metal with nanoparticles also reveals an unprecedented thermal stability. This method overcomes the grain refinement limits and may be extended to any other processes that involve cooling, nucleation, and phase growth for widespread applications.

Authors:
ORCiD logo [1]; ORCiD logo [1];  [2]; ORCiD logo [1]; ORCiD logo [3];  [4];  [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [5]; ORCiD logo [3]; ORCiD logo [3]; ORCiD logo [1]
  1. Univ. of California, Los Angeles, CA (United States)
  2. Univ. of California, Irvine, CA (United States); Thermo Fisher Scientific, Hillsboro, OR (United States)
  3. Univ. of California, Irvine, CA (United States)
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  5. Univ. of Exeter, Penryn, Cornwall (United Kingdom)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1599808
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Science Advances
Additional Journal Information:
Journal Volume: 5; Journal Issue: 8; Journal ID: ISSN 2375-2548
Publisher:
AAAS
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Cao, Chezheng, Yao, Gongcheng, Jiang, Lin, Sokoluk, Maximilian, Wang, Xin, Ciston, Jim, Javadi, Abdolreza, Guan, Zeyi, De Rosa, Igor, Xie, Weiguo, Lavernia, Enrique J., Schoenung, Julie M., and Li, Xiaochun. Bulk ultrafine grained/nanocrystalline metals via slow cooling. United States: N. p., 2019. Web. https://doi.org/10.1126/sciadv.aaw2398.
Cao, Chezheng, Yao, Gongcheng, Jiang, Lin, Sokoluk, Maximilian, Wang, Xin, Ciston, Jim, Javadi, Abdolreza, Guan, Zeyi, De Rosa, Igor, Xie, Weiguo, Lavernia, Enrique J., Schoenung, Julie M., & Li, Xiaochun. Bulk ultrafine grained/nanocrystalline metals via slow cooling. United States. https://doi.org/10.1126/sciadv.aaw2398
Cao, Chezheng, Yao, Gongcheng, Jiang, Lin, Sokoluk, Maximilian, Wang, Xin, Ciston, Jim, Javadi, Abdolreza, Guan, Zeyi, De Rosa, Igor, Xie, Weiguo, Lavernia, Enrique J., Schoenung, Julie M., and Li, Xiaochun. Fri . "Bulk ultrafine grained/nanocrystalline metals via slow cooling". United States. https://doi.org/10.1126/sciadv.aaw2398. https://www.osti.gov/servlets/purl/1599808.
@article{osti_1599808,
title = {Bulk ultrafine grained/nanocrystalline metals via slow cooling},
author = {Cao, Chezheng and Yao, Gongcheng and Jiang, Lin and Sokoluk, Maximilian and Wang, Xin and Ciston, Jim and Javadi, Abdolreza and Guan, Zeyi and De Rosa, Igor and Xie, Weiguo and Lavernia, Enrique J. and Schoenung, Julie M. and Li, Xiaochun},
abstractNote = {Cooling, nucleation, and phase growth are ubiquitous processes in nature. Effective control of nucleation and phase growth is of significance to yield refined microstructures with enhanced performance for materials. Recent studies reveal that ultrafine grained (UFG)/nanocrystalline metals exhibit extraordinary properties. However, conventional microstructure refinement methods, such as fast cooling and inoculation, have reached certain fundamental limits. It has been considered impossible to fabricate bulk UFG/nanocrystalline metals via slow cooling. Here, we report a new discovery that nanoparticles can refine metal grains to ultrafine/nanoscale by instilling a continuous nucleation and growth control mechanism during slow cooling. The bulk UFG/nanocrystalline metal with nanoparticles also reveals an unprecedented thermal stability. This method overcomes the grain refinement limits and may be extended to any other processes that involve cooling, nucleation, and phase growth for widespread applications.},
doi = {10.1126/sciadv.aaw2398},
journal = {Science Advances},
number = 8,
volume = 5,
place = {United States},
year = {2019},
month = {8}
}

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    Works referencing / citing this record:

    Revealing the Mechanisms of Grain Nucleation and Formation During Additive Manufacturing
    journal, January 2020