Strain-rate sensitivity of hardness of nanocrystalline Ni75at.%Al25at.% alloy film

Alfonso Ngan; J B Pethica; Hoi-Pang Ng

Strain-rate sensitivity of hardness of nanocrystalline Ni75_at.%Al_25at.% alloy film

Alfonso Ngan, J B Pethica, Hoi-Pang Ng

Research output: Contribution to journal › Article › Research › peer-review

Abstract

Room-temperature indentation experiments carried out on nanocrystalline Ni75at.%Al25at.% alloy films with a range of grain sizes revealed that the strain-rate sensitivity of hardness is nearly zero and that the hardness increases as grain size decreases. The strain-rate insensitivity of hardness indicates that the room-temperature strength of these alloy films is dominated by an athermal, strain-rate-insensitive component. The hardness of the films was found to be in the range of 2.4 to 3.3 GPa, depending on grain size.

Original language	English
Pages (from-to)	382 - 386
Number of pages	5
Journal	Journal of Materials Research
Volume	18
Issue number	2
Publication status	Published - 2003
Externally published	Yes

Cite this

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title = "Strain-rate sensitivity of hardness of nanocrystalline Ni75at.%Al25at.% alloy film",

abstract = "Room-temperature indentation experiments carried out on nanocrystalline Ni75at.%Al25at.% alloy films with a range of grain sizes revealed that the strain-rate sensitivity of hardness is nearly zero and that the hardness increases as grain size decreases. The strain-rate insensitivity of hardness indicates that the room-temperature strength of these alloy films is dominated by an athermal, strain-rate-insensitive component. The hardness of the films was found to be in the range of 2.4 to 3.3 GPa, depending on grain size.",

author = "Alfonso Ngan and Pethica, {J B} and Hoi-Pang Ng",

year = "2003",

language = "English",

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pages = "382 -- 386",

journal = "Journal of Materials Research",

issn = "0884-2914",

publisher = "Springer",

number = "2",

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T1 - Strain-rate sensitivity of hardness of nanocrystalline Ni75at.%Al25at.% alloy film

AU - Ngan, Alfonso

AU - Pethica, J B

AU - Ng, Hoi-Pang

PY - 2003

Y1 - 2003

N2 - Room-temperature indentation experiments carried out on nanocrystalline Ni75at.%Al25at.% alloy films with a range of grain sizes revealed that the strain-rate sensitivity of hardness is nearly zero and that the hardness increases as grain size decreases. The strain-rate insensitivity of hardness indicates that the room-temperature strength of these alloy films is dominated by an athermal, strain-rate-insensitive component. The hardness of the films was found to be in the range of 2.4 to 3.3 GPa, depending on grain size.

AB - Room-temperature indentation experiments carried out on nanocrystalline Ni75at.%Al25at.% alloy films with a range of grain sizes revealed that the strain-rate sensitivity of hardness is nearly zero and that the hardness increases as grain size decreases. The strain-rate insensitivity of hardness indicates that the room-temperature strength of these alloy films is dominated by an athermal, strain-rate-insensitive component. The hardness of the films was found to be in the range of 2.4 to 3.3 GPa, depending on grain size.

M3 - Article

SN - 0884-2914

VL - 18

SP - 382

EP - 386

JO - Journal of Materials Research

JF - Journal of Materials Research

IS - 2

ER -