Temperature and deformation effect on the low and high angle grain boundary structure of a double forged pure tungsten

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Temperature and deformation effect on the low and high angle grain boundary structure of a double forged pure tungsten. / Sheng, Hua; Sun, Zhi; Uytdenhouwen, Inge; Van Oost, Guido; Vleugels, Jozef; Konstantinovic, Milan (Peer reviewer).

In: International Journal of Refractory Metals & Hard Materials, Vol. 50, No. 5, 21.01.2015, p. 184-190.

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Sheng, Hua ; Sun, Zhi ; Uytdenhouwen, Inge ; Van Oost, Guido ; Vleugels, Jozef ; Konstantinovic, Milan. / Temperature and deformation effect on the low and high angle grain boundary structure of a double forged pure tungsten. In: International Journal of Refractory Metals & Hard Materials. 2015 ; Vol. 50, No. 5. pp. 184-190.

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@article{3d04931407554d50bffa3e32ca4af012,
title = "Temperature and deformation effect on the low and high angle grain boundary structure of a double forged pure tungsten",
abstract = "In order to improve the performance of tungsten, a basic understanding of the microstructure–property relationships is essential. In the present study, a newly developed double forged pure tungsten grade fromPlansee SE was investigated. By analysing the mechanical properties and microstructures in well-defined directions in the double forged tungsten, their relationships could be successfully correlated. A large amount of sub-grainswith a typical size below 5 μm were observed in the as-received double-forged tungsten. After thermally treating the double forged tungsten up to 2000 °C, microstructural recoverywas observed with the onset of recrystallization. Meanwhile, the sub-grain misorientation angle increased accompanied by sub-grain growth. The deformation temperature and the strain rate considerably influenced the final microstructure. The higher the temperature, the lower the amount of sub-grain boundaries due to sub-grain coarsening and the clearer the grain boundaries. The higher the deformation strain rate during tensile testing, the higher the grain orientation spread and the larger the sub-grain misorientation, but the smaller the grain size due to a lower extent of crystallization. This matched well with the mechanical testing data.",
keywords = "Nuclear fusion, tungsten, EBSD, subgrain",
author = "Hua Sheng and Zhi Sun and Inge Uytdenhouwen and {Van Oost}, Guido and Jozef Vleugels and Milan Konstantinovic",
note = "Score = 10",
year = "2015",
month = jan,
day = "21",
doi = "10.1016/j.ijrmhm.2015.01.008",
language = "English",
volume = "50",
pages = "184--190",
journal = "International Journal of Refractory Metals & Hard Materials",
issn = "0263-4368",
publisher = "Elsevier",
number = "5",

}

RIS - Download

TY - JOUR

T1 - Temperature and deformation effect on the low and high angle grain boundary structure of a double forged pure tungsten

AU - Sheng, Hua

AU - Sun, Zhi

AU - Uytdenhouwen, Inge

AU - Van Oost, Guido

AU - Vleugels, Jozef

A2 - Konstantinovic, Milan

N1 - Score = 10

PY - 2015/1/21

Y1 - 2015/1/21

N2 - In order to improve the performance of tungsten, a basic understanding of the microstructure–property relationships is essential. In the present study, a newly developed double forged pure tungsten grade fromPlansee SE was investigated. By analysing the mechanical properties and microstructures in well-defined directions in the double forged tungsten, their relationships could be successfully correlated. A large amount of sub-grainswith a typical size below 5 μm were observed in the as-received double-forged tungsten. After thermally treating the double forged tungsten up to 2000 °C, microstructural recoverywas observed with the onset of recrystallization. Meanwhile, the sub-grain misorientation angle increased accompanied by sub-grain growth. The deformation temperature and the strain rate considerably influenced the final microstructure. The higher the temperature, the lower the amount of sub-grain boundaries due to sub-grain coarsening and the clearer the grain boundaries. The higher the deformation strain rate during tensile testing, the higher the grain orientation spread and the larger the sub-grain misorientation, but the smaller the grain size due to a lower extent of crystallization. This matched well with the mechanical testing data.

AB - In order to improve the performance of tungsten, a basic understanding of the microstructure–property relationships is essential. In the present study, a newly developed double forged pure tungsten grade fromPlansee SE was investigated. By analysing the mechanical properties and microstructures in well-defined directions in the double forged tungsten, their relationships could be successfully correlated. A large amount of sub-grainswith a typical size below 5 μm were observed in the as-received double-forged tungsten. After thermally treating the double forged tungsten up to 2000 °C, microstructural recoverywas observed with the onset of recrystallization. Meanwhile, the sub-grain misorientation angle increased accompanied by sub-grain growth. The deformation temperature and the strain rate considerably influenced the final microstructure. The higher the temperature, the lower the amount of sub-grain boundaries due to sub-grain coarsening and the clearer the grain boundaries. The higher the deformation strain rate during tensile testing, the higher the grain orientation spread and the larger the sub-grain misorientation, but the smaller the grain size due to a lower extent of crystallization. This matched well with the mechanical testing data.

KW - Nuclear fusion

KW - tungsten

KW - EBSD

KW - subgrain

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_138194

UR - http://knowledgecentre.sckcen.be/so2/bibref/12204

U2 - 10.1016/j.ijrmhm.2015.01.008

DO - 10.1016/j.ijrmhm.2015.01.008

M3 - Article

VL - 50

SP - 184

EP - 190

JO - International Journal of Refractory Metals & Hard Materials

JF - International Journal of Refractory Metals & Hard Materials

SN - 0263-4368

IS - 5

ER -

ID: 311819