Fabrication of high-strength duplex nanoporous Cu by dealloying a dual-phase Mg-Cu precursor alloy

• 作者: Si-Young Lee Soo-Min Baek Eun-Ji Gwak Na-Ri Kang Ju-Young Kim Su-Hyeon Kim Jung Gu Lee Sung Soo Park
• 来源期刊: 镁合金学报(英文)
• 学科: 工学
• 关键词: Mg-Cu alloy Nanoporous Cu DEALLOYING Duplex structure Strength
• 年，卷（期）: 2020,（3）
• 页码范围: 910-916
• 页数: 7页
• 分类号: TG1

摘要

Duplex nanoporous Cu was successfully fabricated by dealloying a dual-phase Mg-Cu precursor alloy consisting of intermetallic Mg2Cu and MgCu2.The duplex nanoporous Cu with embedded nanoporous struts exhibited highly enhanced strength compared to the typical monolithic nanoporous Cu under both compressive and flexural test conditions at room temperature;the duplex np-Cu sample exhibited a 12 times higher compressive strength and a 40 times greater flexural strength than the monolithic np-Cu sample.Factors responsible for the strength enhancement in the duplex nanoporous Cu are discussed.