The effect of ball-milling time and annealing temperature on fracture toughness of Ni-3 wt.% SiC using small punch testing

doi:10.1016/j.matchar.2018.02.024

CAS OpenIR > 中科院上海应用物理研究所2011-2019年

	The effect of ball-milling time and annealing temperature on fracture toughness of Ni-3 wt.% SiC using small punch testing
	Yang, C ; Wei, T ; Muransky, O ; Carr, D ; Huang, HF ; Zhou, XT
	2018
Source Publication	MATERIALS CHARACTERIZATION
ISSN	1044-5803
Volume	138 Pages:289-295
Subtype	期刊论文
Abstract	A set of dispersion strengthened Ni-3 wt.% SiC samples have been prepared via a powder metallurgy route for an application in molten salt reactor (MSR) systems. A mixture of 97 wt.% Ni and 3 wt.% SiC powder was prepared by varying the ball-milling time (8, 24, 36 and 48 h). The ball-milling process was followed by powder consolidation using spark plasma sintering (SPS) and rapid cooling to room temperature. The samples were then annealed at different temperatures (300 degrees C, 700 degrees C and 850 degrees C). The fracture behaviour of the Ni-3 wt.% SiC samples was investigated using the Small Punch Test (SPT). A scanning electron microscope (SEM) with energy dispersive spectrometer (EDS) and electron back-scatter diffraction (EBSD), as well as transmission electron microscopy (TEM) were employed to examine the microstructure of the tested Ni-3 wt.% SiC samples. The obtained results show that the SPT fracture energy is strongly dependent on the grain size of Ni matrix, which is affected by ball-milling times and annealing temperature. It has been further found that the segregation of large SiC particles at grain boundaries promotes intergranular fracture and thus significantly reduces the fracture energy. The results indicate that the distribution and size of SiC particles at grain boundary is mainly affected by the ball-milling time. Hence, the ball-milling time governs the fracture toughness of Ni-3 wt.% SiC samples.
Keyword	Metal-matrix Composites Ion irradiatIon Alloy Nanoparticles Embrittlement Dispersion Reactor Steels Damage
DOI	10.1016/j.matchar.2018.02.024
Indexed By	SCI
Language	英语
WOS ID	WOS:000428483400032
Citation statistics	Cited Times:1[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.sinap.ac.cn/handle/331007/29174
Collection	中科院上海应用物理研究所2011-2019年
Affiliation	1.Yang, C 2.Wei, T 3.Muransky, O 4.Carr, D 5.Huang, HF 6.Zhou, XT
Recommended Citation GB/T 7714	Yang, C,Wei, T,Muransky, O,et al. The effect of ball-milling time and annealing temperature on fracture toughness of Ni-3 wt.% SiC using small punch testing[J]. MATERIALS CHARACTERIZATION,2018,138:289-295.
APA	Yang, C,Wei, T,Muransky, O,Carr, D,Huang, HF,&Zhou, XT.(2018).The effect of ball-milling time and annealing temperature on fracture toughness of Ni-3 wt.% SiC using small punch testing.MATERIALS CHARACTERIZATION,138,289-295.
MLA	Yang, C,et al."The effect of ball-milling time and annealing temperature on fracture toughness of Ni-3 wt.% SiC using small punch testing".MATERIALS CHARACTERIZATION 138(2018):289-295.

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