2026-05-28T02:51:17Z https://archive.materialscloud.org/oai2d

oai:materialscloud.org:bjk31-n9p87 2026-04-23T13:27:29Z openaire_data community-mcarchive

Peng, Qiuming Zou, Guodong Huang, Tianlin Tian, Yongjun Peng, Qiuming Zhou, Lutong Wang, Jinming Tong, Ke Hu, Wentao Wang, Lin Sun, Yong Gao, Yipeng Nie, Anmin Yang, Biaobiao Cai, Wei Zou, Guodong Huang, Tianlin Zhu, Wanquan Tian, Yongjun 2026-04-23 <p><span lang="EN-GB">Nanoscale twin boundaries (TBs) effectively restrict the free motion of dislocations by intersecting with other TBs to realize high strength.</span><span lang="EN-GB"> However, the dislocations parallel to the TBs can glide along the TBs, resulting in detwinning for low strength. Herein, we present a triple-interlocked-nanotwinned (TIT) strategy for overcoming these inherent deficiencies. An Mg-9Li alloy was used as a proof-of-concept. The treated alloy had a large volume fraction of TIT interfaces (65.7%). It not only had a high yield strength of </span><span lang="EN-US">508.6</span><span lang="EN-GB"> MPa (approximately eleven times higher than that of the TIT-free sample) but also offered unprecedented ageing resistance, with a reduction in hardness of 6% after 730 days. The martensite-like phase transformation process concurrently triggers multiple-variant twins to form TIT structures. These TIT nets can effectively prohibit dislocation motion, reduce strengthening anisotropy, and disperse localized stress during the deformation process. This strategy of phase transformation twinning open a gate to fabricate other stronger metallic or ceramic nanotwinned bulk materials.</span></p> text/plain application/zip application/zip https://doi.org/10.24435/materialscloud:rf-56 oai:materialscloud.org:bjk31-n9p87 mcid:2026.86 eng Materials Cloud https://archive.materialscloud.org/communities/mcarchive https://doi.org/10.24435/materialscloud:j5-fm info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode Triple-interlocked-nanotwin Magnesium alloys Strength Ageing resistance Triple-interlocked-nanotwinned bulk magnesium alloys with exceptional strength and ageing resistance info:eu-repo/semantics/other