{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,19]],"date-time":"2026-08-19T19:19:15Z","timestamp":1787167155761,"version":"build-2736575974"},"reference-count":56,"publisher":"AIP Publishing","issue":"20","funder":[{"DOI":"10.13039\/501100010906","name":"NSAF Joint Fund","doi-asserted-by":"publisher","award":["U1830206"],"award-info":[{"award-number":["U1830206"]}],"id":[{"id":"10.13039\/501100010906","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"crossref","award":["11904401"],"award-info":[{"award-number":["11904401"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"crossref","award":["12104507"],"award-info":[{"award-number":["12104507"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"crossref"}]},{"name":"Science and Technology Innovation Program of Hunan Province","award":["2021RC4026"],"award-info":[{"award-number":["2021RC4026"]}]}],"content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2023,11,28]]},"abstract":"<jats:p>In the process of high temperature service, the mechanical properties of cutting tools decrease sharply due to the peeling of the protective coating. However, the mechanism of such coating failure remains obscure due to the complicated interaction between atomic structure, temperature, and stress. This dynamic evolution nature demands both large system sizes and accurate description on the atomic scale, raising challenges for existing atomic scale calculation methods. Here, we developed a deep neural network (DNN) potential for Ti\u2013N binary systems based on first-principles study datasets to achieve quantum-accurate large-scale atomic simulation. Compared with empirical interatomic potential based on the embedded-atom-method, the developed DNN-potential can accurately predict lattice constants, phonon properties, and mechanical properties under various thermodynamic conditions. Moreover, for the first time, we present the atomic evolution of the fracture behavior of large-scale rocksalt-structure (B1) TiN systems coupled with temperature and stress conditions. Our study validates that interatomic brittle fractures occur when TiN stretches beyond its tensile yield point. Such simulation of coating fracture and cutting behavior based on large-scale atoms can shed new light on understanding the microstructure and mechanical properties of coating tools under extreme operating conditions.<\/jats:p>","DOI":"10.1063\/5.0171528","type":"journal-article","created":{"date-parts":[[2023,11,22]],"date-time":"2023-11-22T06:08:23Z","timestamp":1700633303000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":8,"title":["Microstructure evolution under thermo-mechanical operating of rocksalt-structure TiN via neural network potential"],"prefix":"10.1063","volume":"159","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7879-1653","authenticated-orcid":false,"given":"Fangyu","family":"Guo","sequence":"first","affiliation":[{"name":"College of Science, National University of Defense Technology 1 , Changsha, Hunan 410073, People\u2019s Republic of China"},{"name":"Hunan Key Laboratory of Extreme Matter and Applications, National University of Defense Technology 2 , Changsha 410073, People\u2019s Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bo","family":"Chen","sequence":"additional","affiliation":[{"name":"College of Science, National University of Defense Technology 1 , Changsha, Hunan 410073, People\u2019s Republic of China"},{"name":"Hunan Key Laboratory of Extreme Matter and Applications, National University of Defense Technology 2 , Changsha 410073, People\u2019s Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0004-2304-0213","authenticated-orcid":false,"given":"Qiyu","family":"Zeng","sequence":"additional","affiliation":[{"name":"College of Science, National University of Defense Technology 1 , Changsha, Hunan 410073, People\u2019s Republic of China"},{"name":"Hunan Key Laboratory of Extreme Matter and Applications, National University of Defense Technology 2 , Changsha 410073, People\u2019s Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8072-6773","authenticated-orcid":false,"given":"Xiaoxiang","family":"Yu","sequence":"additional","affiliation":[{"name":"College of Science, National University of Defense Technology 1 , Changsha, Hunan 410073, People\u2019s Republic of China"},{"name":"Hunan Key Laboratory of Extreme Matter and Applications, National University of Defense Technology 2 , Changsha 410073, People\u2019s Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8092-4144","authenticated-orcid":false,"given":"Kaiguo","family":"Chen","sequence":"additional","affiliation":[{"name":"College of Science, National University of Defense Technology 1 , Changsha, Hunan 410073, People\u2019s Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2986-5927","authenticated-orcid":false,"given":"Dongdong","family":"Kang","sequence":"additional","affiliation":[{"name":"College of Science, National University of Defense Technology 1 , Changsha, Hunan 410073, People\u2019s Republic of China"},{"name":"Hunan Key Laboratory of Extreme Matter and Applications, National University of Defense Technology 2 , Changsha 410073, People\u2019s Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yong","family":"Du","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Powder Metallurgy, Central South University 3 , Changsha 410083, People\u2019s Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jianhua","family":"Wu","sequence":"additional","affiliation":[{"name":"College of Science, National University of Defense Technology 1 , Changsha, Hunan 410073, People\u2019s Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7423-7500","authenticated-orcid":false,"given":"Jiayu","family":"Dai","sequence":"additional","affiliation":[{"name":"College of Science, National University of Defense Technology 1 , Changsha, Hunan 410073, People\u2019s Republic of China"},{"name":"Hunan Key Laboratory of Extreme Matter and Applications, National University of Defense Technology 2 , Changsha 410073, People\u2019s Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"317","published-online":{"date-parts":[[2023,11,22]]},"reference":[{"key":"2023112211064689100_c1","doi-asserted-by":"publisher","first-page":"21","DOI":"10.1016\/0040-6090(85)90333-5","volume":"128","year":"1985","journal-title":"Thin Solid Films"},{"key":"2023112211064689100_c2","doi-asserted-by":"publisher","first-page":"37","DOI":"10.1016\/j.jmst.2014.06.002","volume":"31","year":"2015","journal-title":"J. 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