In situ study on enhanced heavy ion irradiation tolerance of porous Mg. (February 2018)

• Record Type: Journal Article
• Authors: Li, Jin; Chen, Y.; Wang, H.; Zhang, X.
• Is Part Of: Scripta materialia. Number 144(2018)
• Page Start: 13
• Page End: 17
• Publication Date: 2018-02
• Subjects: In situ irradiation -- Porous materials -- Irradiation tolerance -- Defect absorption; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2017.09.018
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: Mg is known to be highly vulnerable to irradiation damage. Here we show, via in situ Kr ion irradiation studies inside a transmission electron microscope, that both defect density and size have been reduced substantially in porous Mg compared to dense coarse-grained Mg counterpart. Both prism and basal dislocation loops form at low dose in coarse-grained Mg, but basal loops dominate at a higher dose level. Meanwhile, in irradiated porous Mg, basal loops prevail throughout the entire irradiation process. Mechanisms that lead to enhanced irradiation tolerance of porous Mg are discussed.