Journal ArticleDOI
Indentation fracture toughness behavior of FeCo-based bulk metallic glass intrinsic composites
TLDR
In this paper, the indentation fracture toughness of bulk metallic glass alloys in the partially crystalline composite state has been studied and corner cracking was observed on indentation in all the compositions above a certain critical load.Abstract:
Indentation fracture toughness of (Fe0·5Co0.5)69 − xNb6B25 + x (x = 0, 2, 4) bulk metallic glass alloys in the partially crystalline (intrinsic composite) state has been studied. Corner cracking was observed on indentation in all the compositions above a certain critical load. High hardness with values in excess of 1100HV was obtained for all the alloy compositions. Indentation fracture toughness measured through various empirical relations was found to beread more
Citations
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Journal ArticleDOI
Design of Fe-Based Bulk Metallic Glasses with Improved Wear Resistance
TL;DR: This work develops a series of novel Fe-based BMGs with improved wear resistance by altering the Cr and Mo contents in an Fe-Cr-Mo-C-B-Y glass-forming system, and clarifies the enhanced wear performance according to an effective indicator Kc3/4 Hv1/2 that correlates positively with the wear resistance of the samples.
Journal ArticleDOI
Instrumented indentation of fused silica by Berkovich indenter
Chenghui Gao,Ming Liu +1 more
TL;DR: In this paper, the scaling relationships among indentation variables such as the maximum indentation displacement, contact depth, the ratio of load over contact stiffness, and the proportion of permanent displacement over the maximum displacement were investigated via Berkovich indentation of fused silica.
Journal ArticleDOI
Strategy for improving the wear-resistance properties of detonation sprayed Fe-based amorphous coatings by cryogenic cycling treatment
TL;DR: In this paper, the effects of CCT on microstructure, thermal properties, mechanical and tribological properties of Fe-based amorphous coatings were investigated and it was found that all the coated samples with CCT are still well bonded with the invar steel substrate, except for the surface of C60 appears local cracks.
Journal ArticleDOI
Berkovich nanoindentation of borosilicate K9 glass
Chenghui Gao,Ligang Yao,Ming Liu +2 more
TL;DR: Instrumented indentation was used to investigate the proportional relationships among indentation variables such as the maximum indentation displacement, contact depth, ratio of load over contact stiffness, and the ratio of permanent displacement over the maximum displacement as discussed by the authors.
Journal ArticleDOI
Determination of parameters of free volume model for Zr-based BMG via nanoindentation
TL;DR: In this paper, a pressure-dependent free volume model based on user material subroutine (UMAT) was proposed to model the mechanical behavior of Zr55Cu30Ag15 bulk metallic glass (BMG).
References
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Journal ArticleDOI
A Critical Evaluation of Indentation Techniques for Measuring Fracture Toughness: I, Direct Crack Measurements
TL;DR: In this paper, the application of indentation techniques to the evaluation of fracture toughness is examined critically, in two parts: the first part is focused on an approach which involves direct measurement of Vickers-produced radial cracks as a function of the indentation load.
A Critical evaluation of indentation techniques for measuring fracture toughness
TL;DR: In this paper, the application of indentation techniques to the evaluation of fracture toughness is examined critically, in two parts: the first part is focused on an approach which involves direct measurement of Vickers-produced radial cracks as a function of the indentation load.
Journal ArticleDOI
Fracture Toughness Determinations by Indentation
Anthony G. Evans,E. A. Charles +1 more
Journal ArticleDOI
Evaluation ofKIc of brittle solids by the indentation method with low crack-to-indent ratios
Journal ArticleDOI
Indentation fracture: principles and applications
Brian R. Lawn,Rodney Wilshaw +1 more
TL;DR: The basic principles and practical applications of indentation fracture are reviewed in this article, with a focus on the application of fracture fracture in the field of orthogonal fracture repair and alignment.