The effect of He bubbles on the swelling and hardening of UNS N10003 alloy

JOURNAL OF ALLOYS AND COMPOUNDS

卷:746

Article

Lei, Guanhong^1,2  Xie, Ruobing¹  Huang, Hefei¹  Liu, Renduo¹  Huang, Qing¹  Li, Jianjian¹  Zhou, Yuying^1,2  Li, Cheng¹  Lei, Qiantao¹  Deng, Qi¹  Wang, Yongqi¹  Wang, Chengbin¹  Zhang, Wei¹  Yan, Long¹  Tang, Ming³ 

[1] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

关键词: Nickel based alloy;    Ion irradiation;    He bubbles;    Swelling;    Irradiation hardening;   

DOI  :  10.1016/j.jallcom.2018.02.291

来源: Elsevier

【 摘 要 】

In order to investigate the effect of He bubbles on the swelling and hardening of nickel based alloys, 1.2 MeV He ion irradiation was performed on UNS N10003 alloy at 650 degrees C. The number densities and sizes of He bubbles increase with increasing irradiation dose. Neither black spots nor dislocation loops were observed in TEM images of the as-irradiated samples. Irradiation dose up to 6.18 displacements per atom (dpa) causes a swelling of 2.67%, which is mainly ascribed to He bubbles. He bubbles induced hardening increases with increasing irradiation dose. The irradiation hardening behavior was compared with heavy ion irradiation. The result reveals that the obstacle strength of He bubbles is less than that of the saturated heavy ion induced irradiation defects. (C) 2018 Elsevier B.V. All rights reserved.

【 授权许可】

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