Evolution of adiabatic shear bands in typical microstructure of Ti-6Al-4V alloy

Jing Zhang; Chengwen Tan; Xinqin Liu; Fuchi Wang; Hongnian Cai

doi:10.3969/j.issn.0258-7076.2009.05.008

Evolution of adiabatic shear bands in typical microstructure of Ti-6Al-4V alloy

Jing Zhang, Chengwen Tan^*, Xinqin Liu, Fuchi Wang, Hongnian Cai

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Institute of Technology

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

10 Citations (Scopus)

Abstract

In order to investigate evolution of adiabatic shear bands in typical microstructure (bimodal and lamellar microstructures) of Ti-6Al-4V alloy, the split Hopkinson press bar (SHPB) was used to impact hat-shaped specimens, and three impact bars of different length were used to control the loading time (50, 60 and 80μs). SEM and TEM were carried out to observe patterns of adiabatic shear bands (ASBs) in the specimens after impacting. The results showed that thickness of ASBs increased with the increase of loading time, and with the increase of loading time, evolution of ASBs in bimodal and lamellar microstructure was quite different. In lamellar microstructure, equiaxed structure was found in the specimen under the loading time of 80μs, which might indicate that dynamic recrystallization happened. It led the thickness of ASB in lamellar microstructure thicker than that in bimodal microstructure.

Original language	English
Pages (from-to)	648-651
Number of pages	4
Journal	Xiyou jinshu
Volume	33
Issue number	5
DOIs	https://doi.org/10.3969/j.issn.0258-7076.2009.05.008
Publication status	Published - Oct 2009

Keywords

Adiabatic shear bands
Evolution
Ti-6Al-4V

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10.3969/j.issn.0258-7076.2009.05.008

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title = "Evolution of adiabatic shear bands in typical microstructure of Ti-6Al-4V alloy",

abstract = "In order to investigate evolution of adiabatic shear bands in typical microstructure (bimodal and lamellar microstructures) of Ti-6Al-4V alloy, the split Hopkinson press bar (SHPB) was used to impact hat-shaped specimens, and three impact bars of different length were used to control the loading time (50, 60 and 80μs). SEM and TEM were carried out to observe patterns of adiabatic shear bands (ASBs) in the specimens after impacting. The results showed that thickness of ASBs increased with the increase of loading time, and with the increase of loading time, evolution of ASBs in bimodal and lamellar microstructure was quite different. In lamellar microstructure, equiaxed structure was found in the specimen under the loading time of 80μs, which might indicate that dynamic recrystallization happened. It led the thickness of ASB in lamellar microstructure thicker than that in bimodal microstructure.",

keywords = "Adiabatic shear bands, Evolution, Ti-6Al-4V",

author = "Jing Zhang and Chengwen Tan and Xinqin Liu and Fuchi Wang and Hongnian Cai",

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T1 - Evolution of adiabatic shear bands in typical microstructure of Ti-6Al-4V alloy

AU - Zhang, Jing

AU - Tan, Chengwen

AU - Liu, Xinqin

AU - Wang, Fuchi

AU - Cai, Hongnian

PY - 2009/10

Y1 - 2009/10

N2 - In order to investigate evolution of adiabatic shear bands in typical microstructure (bimodal and lamellar microstructures) of Ti-6Al-4V alloy, the split Hopkinson press bar (SHPB) was used to impact hat-shaped specimens, and three impact bars of different length were used to control the loading time (50, 60 and 80μs). SEM and TEM were carried out to observe patterns of adiabatic shear bands (ASBs) in the specimens after impacting. The results showed that thickness of ASBs increased with the increase of loading time, and with the increase of loading time, evolution of ASBs in bimodal and lamellar microstructure was quite different. In lamellar microstructure, equiaxed structure was found in the specimen under the loading time of 80μs, which might indicate that dynamic recrystallization happened. It led the thickness of ASB in lamellar microstructure thicker than that in bimodal microstructure.

AB - In order to investigate evolution of adiabatic shear bands in typical microstructure (bimodal and lamellar microstructures) of Ti-6Al-4V alloy, the split Hopkinson press bar (SHPB) was used to impact hat-shaped specimens, and three impact bars of different length were used to control the loading time (50, 60 and 80μs). SEM and TEM were carried out to observe patterns of adiabatic shear bands (ASBs) in the specimens after impacting. The results showed that thickness of ASBs increased with the increase of loading time, and with the increase of loading time, evolution of ASBs in bimodal and lamellar microstructure was quite different. In lamellar microstructure, equiaxed structure was found in the specimen under the loading time of 80μs, which might indicate that dynamic recrystallization happened. It led the thickness of ASB in lamellar microstructure thicker than that in bimodal microstructure.

KW - Adiabatic shear bands

KW - Evolution

KW - Ti-6Al-4V

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ER -

Evolution of adiabatic shear bands in typical microstructure of Ti-6Al-4V alloy

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Keywords

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