Mechanical Behavior and Fracture Properties of NiAl Intermetallic Alloy with Different Copper Contents

Chen, Tao-Hsing; Wu, Jian-Hong

doi:10.3390/app6030070

Open AccessArticle

Mechanical Behavior and Fracture Properties of NiAl Intermetallic Alloy with Different Copper Contents

by

Tao-Hsing Chen

^*

and

Jian-Hong Wu

Department of Mechanical Engineering, National Kaohsiung University of Applied Sciences, Kaohisung 807, Taiwan

^*

Author to whom correspondence should be addressed.

Appl. Sci. 2016, 6(3), 70; https://doi.org/10.3390/app6030070

Submission received: 21 December 2015 / Revised: 13 February 2016 / Accepted: 15 February 2016 / Published: 2 March 2016

(This article belongs to the Special Issue Selected Papers from the 2015 International Conference on Inventions)

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Abstract

The deformation behavior and fracture characteristics of NiAl intermetallic alloy containing 5~7 at% Cu are investigated at room temperature under strain rates ranging from 1 × 10⁻³ to 5 × 10³ s⁻¹. It is shown that the copper contents and strain rate both have a significant effect on the mechanical behavior of the NiAl alloy. Specifically, the flow stress increases with an increasing copper content and strain rate. Moreover, the ductility also improves as the copper content increases. The change in the mechanical response and fracture behavior of the NiAl alloy given a higher copper content is thought to be the result of the precipitation of β-phase (Ni,Cu)Al and γ'-phase (Ni,Cu)₃Al in the NiAl matrix.

Keywords: intermetallic; NiAl alloy; strain rate effect; fracture properties; precipitate

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MDPI and ACS Style

Chen, T.-H.; Wu, J.-H. Mechanical Behavior and Fracture Properties of NiAl Intermetallic Alloy with Different Copper Contents. Appl. Sci. 2016, 6, 70. https://doi.org/10.3390/app6030070

AMA Style

Chen T-H, Wu J-H. Mechanical Behavior and Fracture Properties of NiAl Intermetallic Alloy with Different Copper Contents. Applied Sciences. 2016; 6(3):70. https://doi.org/10.3390/app6030070

Chicago/Turabian Style

Chen, Tao-Hsing, and Jian-Hong Wu. 2016. "Mechanical Behavior and Fracture Properties of NiAl Intermetallic Alloy with Different Copper Contents" Applied Sciences 6, no. 3: 70. https://doi.org/10.3390/app6030070

APA Style

Chen, T.-H., & Wu, J.-H. (2016). Mechanical Behavior and Fracture Properties of NiAl Intermetallic Alloy with Different Copper Contents. Applied Sciences, 6(3), 70. https://doi.org/10.3390/app6030070

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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Mechanical Behavior and Fracture Properties of NiAl Intermetallic Alloy with Different Copper Contents

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