Cracking behavior of helium-irradiated small-volume copper. (1st April 2018)

• Record Type: Journal Article
• Authors: Han, Wei-Zhong; Ding, Ming-Shuai; Shan, Zhi-Wei
• Is Part Of: Scripta materialia. Number 147(2018)
• Page Start: 1
• Page End: 5
• Publication Date: 2018-04-01
• Subjects: Helium bubble -- Cracking -- Irradiation -- Cavity -- Nano-bridge; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2017.12.029
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: Radiation-induced grain-boundary helium bubbles are the cause of the significant helium embrittlement. However, the influence of grain-interior helium bubbles on the cracking behavior of metals has not been explored. Here, we investigate the cracking propensity of helium-irradiated small-volume Cu single-crystals, and compare with those of Cu single-crystals and Cu bicrystals. We found that the irradiation-induced helium bubbles only slightly increased the cracking propensity of the single-crystal Cu, while the cracking resistance of the helium-irradiated Cu single-crystals was superior to that of the Cu bicrystals, both with and without helium bubbles. Graphical abstract: Image 1