Nanocrystalline material with anomalous modulus of resilience and springback effect

SCRIPTA MATERIALIA

卷:141

Article

Darling, K. A.¹  Kale, C.²  Turnage, S.²  Hornbuckle, B. C.¹  Luckenbaugh, T. L.¹  Grendahl, S.¹  Solanki, K. N.² 

[1] Weap & Mat Res Directorate, Aberdeen Proving Ground, MD 21001 USA

[2] Arizona State Univ, Sch Engn Matter Transport & Energy, Tempe, AZ 85287 USA

关键词: Nanocrystalline;    Springback;    Modulus of resilience;    Flexural strain;   

DOI  :  10.1016/j.scriptamat.2017.07.012

来源: Elsevier

【 摘 要 】

Stability of nanocrystalline microstructural features allows structural materials to be synthesized and tested in ways that have heretofore been pursued only on a limited basis. Here, we demonstrate using quasi-static compression and three point bend tests that, in a stabilized nanocrystalline metal with tailored solute concentrations, i.e., NC-Cu-3 at.%Ta, extraordinary properties such as ultrahigh hardness along with anomalus modulus of resilience and springback effects can be manifested. Such effects influence a wide range of materials response including elastic energy absorption, damping, fatigue and wear. The present study, therefore, represents a pathway for designing highly resilient materials for everyday applications. Published by Elsevier Ltd on behalf of Acta Materialia Inc.

【 授权许可】

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