{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,21]],"date-time":"2026-10-21T02:19:43Z","timestamp":1792549183812,"version":"4.5.0"},"reference-count":45,"publisher":"MDPI AG","issue":"18","license":[{"start":{"date-parts":[[2024,9,12]],"date-time":"2024-09-12T00:00:00Z","timestamp":1726099200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Key Laboratory Foundation of Science and Technology on Materials under Shock and Impact","award":["2021CX02046"],"award-info":[{"award-number":["2021CX02046"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>Ti-based bulk metallic glass composites (BMGMCs) containing an in situ formed metastable \u03b2 phase normally exhibit enhanced plasticity attributed to induced phase transformation or twinning. However, the underlying deformation micromechanism remains controversial. This study investigates a novel deformation mechanism of Ti-based BMGMCs with a composition of Ti42.3Zr28Cu8.3Nb4.7Ni1.7Be15 (at%). The microstructures after tension were analyzed using advanced electron microscopy. The dendrites were homogeneously distributed in the glassy matrix with a volume fraction of 55 \u00b1 2% and a size of 1~5 \u03bcm. The BMGMCs deformed in a serrated manner with a fracture strength (\u03c3f) of ~1710 MPa and a fracture strain of ~7.1%, accompanying strain hardening. The plastic deformation beyond yielding was achieved by a synergistic action, which includes shear banding, localized amorphization and a localized BCC (\u03b2-Ti) to HCP (\u03b1-Ti) structural transition. The localized amorphization was caused by high local strain rates during shear band extension from the amorphous matrix to the crystalline reinforcements. The localized structural transition from BCC to HCP resulted from accumulating concentrated stress during deformation. The synergistic action enriches our understanding of the deformation mechanism of Ti-based BMGMCs and also sheds light on material design and performance improvement.<\/jats:p>","DOI":"10.3390\/ma17184486","type":"journal-article","created":{"date-parts":[[2024,9,12]],"date-time":"2024-09-12T10:15:27Z","timestamp":1726136127000},"page":"4486","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Tensile Deformation Mechanism of an In Situ Formed Ti-Based Bulk Metallic Glass Composites"],"prefix":"10.3390","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0009-0003-8380-0811","authenticated-orcid":false,"given":"Haiyun","family":"Wang","sequence":"first","affiliation":[{"name":"School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Na","family":"Chen","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Huanwu","family":"Cheng","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3899-9772","authenticated-orcid":false,"given":"Yangwei","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Denghui","family":"Zhao","sequence":"additional","affiliation":[{"name":"China Ordnance Industrial Standardization Research Institute, Beijing 100089, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,9,12]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"529","DOI":"10.1016\/S0966-9795(03)00046-3","article-title":"Bulk metallic glasses","volume":"11","year":"2003","journal-title":"Intermetallics"},{"key":"ref_2","first-page":"86","article-title":"Bulk metallic glass composites","volume":"21","author":"Wang","year":"2005","journal-title":"J. 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