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Cracking Behavior in Additively Manufactured Pure Tungsten
- Wang, Dian-Zheng (author)
- Li, Kai-Lun (author)
- Yu, Chen-Fan (author)
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- Ma, Jing (author)
- Liu, Wei (author)
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- (creator_code:org_t)
- 2018-05-19
- 2019
- English.
- In: Acta Metallurgica Sinica (English Letters). - : Springer Science and Business Media LLC. - 1006-7191 .- 2194-1289. ; 32:1, s. 127-135
- Journal article (peer-reviewed)
Abstract
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- In this study, near fully dense (96.5%) pure tungsten bulks were additively manufactured and the cracking behavior was investigated. A crack network with a spacing of similar to 100m was observed in the fabricated bulks. It was observed that the laser scanning strategy, which could tailor the microstructure, affected the crack distribution pattern in fabricated tungsten. The calculated surface temperature difference (7300K) was much higher than the cracking criterion (800K) of tungsten, indicating that cracking is almost inevitable in laser additive manufacturing of tungsten. It could be concluded that crack network formed because the cracks emerged in every laser molten track and then interconnected in the layer-by-layer building process.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
Keyword
- Tungsten
- Selective laser melting
- Cracking
- Microstructure
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Wang, Dian-Zheng
- Li, Kai-Lun
- Yu, Chen-Fan
- Ma, Jing
- Liu, Wei
- Shen, Zhi-Jian
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- Stockholm University
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