铍材的显微组织对其纳米压痕行为的影响

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Abstract In this paper, optical microscopy (OM), scanning electron microscopy (SEM) and nanoindentation test has been performed on the beryllium materials prepared by HIP with different microstructures. The creep properties of the beryllium were studied by measuring load-depth (P-h) curves with different loading rates. The results show that the creep behavior of beryllium is loading rate dependent, and the creep increases with increasing the loading rate. In addition, further analysis the load-depth (P-h) curves found that the microstructures of beryllium, including the pores and the content of BeO, have certain effects on the nanoindentation behavior of the beryllium metal. It’s due to the pores and BeO that changed the interaction between dislocations and particles.

Key words： beryllium microstructure nanoindentation creep loading rate

Received: 21 September 2017 Published: 12 July 2019

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TG457.19

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	Articles by authors
	YU Yongxin
	XIAO Daihong
	LIU Wensheng
	MA Yunzhu

Cite this article:

YU Yongxin,XIAO Daihong,LIU Wensheng, et al. Effect of microstructure on nanoindentation behavior of beryllium materials[J]. Materials Science and Engineering of Powder Metallurgy, 2018, 23(3): 306-311.

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http://pmbjb.csu.edu.cn/EN/ OR http://pmbjb.csu.edu.cn/EN/Y2018/V23/I3/306

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