Accordance between fracture toughness and strength difference in TC21 titanium alloy with equiaxed microstructure

Hui Shao; Di Shan; Yongqing Zhao; Peng Ge; Weidong Zeng

doi:10.1016/j.msea.2016.02.088

Accordance between fracture toughness and strength difference in TC21 titanium alloy with equiaxed microstructure

Hui Shao, Di Shan, Yongqing Zhao, Peng Ge, Weidong Zeng

School of Materials Sience and Engineering

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

39 Scopus citations

Abstract

As well known, the properties of strength and toughness were mutually exclusive in the metal materials. Therefore, few investigations focusing on the accordance relationship between the strength and the fracture toughness had been carried out. In this paper, the related insight was discussed by the microstructure characteristic, strain-hardening effect and slip band morphology at different scales. The accordance between the plane fracture toughness (K_IC) and the strength difference (SD) (the difference between the yield strength and the tensile strength) was found. All datasets showed a linear K_IC-SD with the slope of 0.31, which was not reported by other researchers for TC21 titanium alloy with the equiaxed microstructure. Finally, this accordance relationship could be further identified in other alloys, such as aluminum alloy, magnesium alloy and steel.

Original language	English
Pages (from-to)	10-16
Number of pages	7
Journal	Materials Science and Engineering: A
Volume	664
DOIs	https://doi.org/10.1016/j.msea.2016.02.088
State	Published - 10 May 2016

Keywords

Equiaxed microstructure
Fracture toughness
Strength difference
Titanium alloy

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10.1016/j.msea.2016.02.088

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abstract = "As well known, the properties of strength and toughness were mutually exclusive in the metal materials. Therefore, few investigations focusing on the accordance relationship between the strength and the fracture toughness had been carried out. In this paper, the related insight was discussed by the microstructure characteristic, strain-hardening effect and slip band morphology at different scales. The accordance between the plane fracture toughness (KIC) and the strength difference (SD) (the difference between the yield strength and the tensile strength) was found. All datasets showed a linear KIC-SD with the slope of 0.31, which was not reported by other researchers for TC21 titanium alloy with the equiaxed microstructure. Finally, this accordance relationship could be further identified in other alloys, such as aluminum alloy, magnesium alloy and steel.",

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T1 - Accordance between fracture toughness and strength difference in TC21 titanium alloy with equiaxed microstructure

AU - Shao, Hui

AU - Shan, Di

AU - Zhao, Yongqing

AU - Ge, Peng

AU - Zeng, Weidong

PY - 2016/5/10

Y1 - 2016/5/10

N2 - As well known, the properties of strength and toughness were mutually exclusive in the metal materials. Therefore, few investigations focusing on the accordance relationship between the strength and the fracture toughness had been carried out. In this paper, the related insight was discussed by the microstructure characteristic, strain-hardening effect and slip band morphology at different scales. The accordance between the plane fracture toughness (KIC) and the strength difference (SD) (the difference between the yield strength and the tensile strength) was found. All datasets showed a linear KIC-SD with the slope of 0.31, which was not reported by other researchers for TC21 titanium alloy with the equiaxed microstructure. Finally, this accordance relationship could be further identified in other alloys, such as aluminum alloy, magnesium alloy and steel.

AB - As well known, the properties of strength and toughness were mutually exclusive in the metal materials. Therefore, few investigations focusing on the accordance relationship between the strength and the fracture toughness had been carried out. In this paper, the related insight was discussed by the microstructure characteristic, strain-hardening effect and slip band morphology at different scales. The accordance between the plane fracture toughness (KIC) and the strength difference (SD) (the difference between the yield strength and the tensile strength) was found. All datasets showed a linear KIC-SD with the slope of 0.31, which was not reported by other researchers for TC21 titanium alloy with the equiaxed microstructure. Finally, this accordance relationship could be further identified in other alloys, such as aluminum alloy, magnesium alloy and steel.

KW - Equiaxed microstructure

KW - Fracture toughness

KW - Strength difference

KW - Titanium alloy

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Accordance between fracture toughness and strength difference in TC21 titanium alloy with equiaxed microstructure

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Keywords

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