Fractal fracture and transformation toughening in CuNiAl single crystal

C. H. Shek; G. M. Lin; J. K L Lai; Z. F. Tang

Fractal fracture and transformation toughening in CuNiAl single crystal

C. H. Shek
, G. M. Lin
, J. K L Lai
, Z. F. Tang

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Abstract

The fracture toughness J_Ic(ρ) and fractal dimension D_f of fractured surfaces of CuNiAl single crystal have been measured at temperatures in the range 20 °C to 120 °C, in which thermoelastic martensitic transformation takes place. The parent phase has higher fracture toughness than the martensite phase due to stress-induced transformation. The relationship between J_Ic(ρ) and D_f has been studied. It was found that log J_Ic(ρ) is linearly related to D_f if the failure involves a single mechanism. The slope of the plot may either be positive or negative for brittle or ductile failure, respectively. The difference in the J_Ic(ρ)-D_f correlation can be understood in terms of the micromechanism of fracture.

Original language	English
Pages (from-to)	1337-1340
Journal	Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume	28
Issue number	6
Publication status	Published - 1997

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title = "Fractal fracture and transformation toughening in CuNiAl single crystal",

abstract = "The fracture toughness JIc(ρ) and fractal dimension Df of fractured surfaces of CuNiAl single crystal have been measured at temperatures in the range 20 °C to 120 °C, in which thermoelastic martensitic transformation takes place. The parent phase has higher fracture toughness than the martensite phase due to stress-induced transformation. The relationship between JIc(ρ) and Df has been studied. It was found that log JIc(ρ) is linearly related to Df if the failure involves a single mechanism. The slope of the plot may either be positive or negative for brittle or ductile failure, respectively. The difference in the JIc(ρ)-Df correlation can be understood in terms of the micromechanism of fracture.",

author = "Shek, \{C. H.\} and Lin, \{G. M.\} and Lai, \{J. K L\} and Tang, \{Z. F.\}",

year = "1997",

language = "English",

volume = "28",

pages = "1337--1340",

journal = "Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science",

issn = "1073-5623",

publisher = "Springer Boston",

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TY - JOUR

T1 - Fractal fracture and transformation toughening in CuNiAl single crystal

AU - Shek, C. H.

AU - Lin, G. M.

AU - Lai, J. K L

AU - Tang, Z. F.

PY - 1997

Y1 - 1997

N2 - The fracture toughness JIc(ρ) and fractal dimension Df of fractured surfaces of CuNiAl single crystal have been measured at temperatures in the range 20 °C to 120 °C, in which thermoelastic martensitic transformation takes place. The parent phase has higher fracture toughness than the martensite phase due to stress-induced transformation. The relationship between JIc(ρ) and Df has been studied. It was found that log JIc(ρ) is linearly related to Df if the failure involves a single mechanism. The slope of the plot may either be positive or negative for brittle or ductile failure, respectively. The difference in the JIc(ρ)-Df correlation can be understood in terms of the micromechanism of fracture.

AB - The fracture toughness JIc(ρ) and fractal dimension Df of fractured surfaces of CuNiAl single crystal have been measured at temperatures in the range 20 °C to 120 °C, in which thermoelastic martensitic transformation takes place. The parent phase has higher fracture toughness than the martensite phase due to stress-induced transformation. The relationship between JIc(ρ) and Df has been studied. It was found that log JIc(ρ) is linearly related to Df if the failure involves a single mechanism. The slope of the plot may either be positive or negative for brittle or ductile failure, respectively. The difference in the JIc(ρ)-Df correlation can be understood in terms of the micromechanism of fracture.

UR - https://www.scopus.com/pages/publications/0031165945

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-0031165945&origin=recordpage

M3 - RGC 21 - Publication in refereed journal

SN - 1073-5623

VL - 28

SP - 1337

EP - 1340

JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

IS - 6

ER -

Fractal fracture and transformation toughening in CuNiAl single crystal

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