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Therefore, molecular dynamics methods were used to simulate nanoindentation and microstructural evolution. We found the indenter reaction force and hardness of the Ni<jats:sub>3<\/jats:sub>Al phase is the largest. The pop-in event in Ni<jats:sub>3<\/jats:sub>Al phase is more obvious than that in the Ni phase and Ni\/Ni<jats:sub>3<\/jats:sub>Al phase. Because lots of dislocations in the Ni<jats:sub>3<\/jats:sub>Al phase break through the barrier of the interface and cut into the Ni phase, while dislocations in the Ni phase only slip inside the Ni phase. Moreover, we found that the position of the starting point of the adhesion force recovery is mainly related to the elastic recovery of the material. The stronger the elastic recovery of the phase, the smaller the depth value corresponding to the starting point of the recovery. We further studied the variation of potential energy with indentation depth and found that the change of wave trough of the load\u2013displacement (<jats:italic>P<\/jats:italic>\u2013<jats:italic>h<\/jats:italic>) curve is related to stacking fault energy. This study has important theoretical guiding significance for the in-depth understanding and engineering application of the mechanical properties of nickel-based single crystal alloys.<\/jats:p>","DOI":"10.1088\/1361-6528\/ac3d62","type":"journal-article","created":{"date-parts":[[2021,11,25]],"date-time":"2021-11-25T22:35:43Z","timestamp":1637879743000},"page":"105703","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":33,"title":["Ni\/Ni<sub>3<\/sub>Al interface-dominated nanoindentation deformation and pop-in events"],"prefix":"10.1088","volume":"33","author":[{"given":"Jinjie","family":"Zhou","sequence":"first","affiliation":[]},{"given":"Yingle","family":"He","sequence":"additional","affiliation":[]},{"given":"Jinchuan","family":"Shen","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3446-1695","authenticated-orcid":true,"given":"F A","family":"Essa","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5600-632X","authenticated-orcid":true,"given":"Jingui","family":"Yu","sequence":"additional","affiliation":[]}],"member":"266","published-online":{"date-parts":[[2021,12,13]]},"reference":[{"key":"nanoac3d62bib1","doi-asserted-by":"publisher","first-page":"197","DOI":"10.1016\/j.engfailanal.2016.05.033","article-title":"Investigation of Intergranular Corrosion in 2nd stage gas turbine blades of an aircraft engine","volume":"68","author":"Khan","year":"2016","journal-title":"Eng. 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