#合金的热裂——专题文献报道#
275.
标题: Coupling phase-field model and CFD for hot cracking predictions of Al-Li alloys
作者: Chen, DX (Chen, Dongxu); Wang, JS (Wang, Junsheng); Zhang, C (Zhang, Chi)
来源出版物: COMPUTATIONAL MATERIALS SCIENCE 卷: 192 文献号: 110361 DOI: 10.1016/j.commatsci.2021.110361 出版年: MAY 2021
Web of Science 核心合集中的 "被引频次": 0
被引频次合计: 0
使用次数 (最近 180 天): 0
使用次数 (2013 年至今): 0
引用的参考文献数: 54
摘要: To improve the prediction of hot cracking, fluid flow, and dendritic growth must be investigated quantitatively and thus an integrated 2D model of coupling phase-field model together with CFD calculations was proposed in this work. First, a phase-field model for thermodynamics of binary Al-3.3wt.%Li was developed based on the CALPHAD database. The columnar dendrites with different orientation angles (0?-28?), different grain sizes of equiaxed grains, and columnar to equiaxed transition (CET) were simulated. Then, CFD calculations were performed based on geometries from simulated microstructure features to predict the inter-dendritic pressure distribution. The RDG model and Kou model were used to evaluate the hot cracking susceptibility (HCS) of these simulated microstructure features. Comparing to the RDG model, our simulations have shown that the feeding pressure drop varies as a function of grain orientation, while it is a constant in the RDG model. It is found that equiaxed crystals with large grain sizes have high HCS due to their large pressure drop as well as the narrow ??? liquid channel. The Kou model is considered unable to calculate the HCS of CET because the value of ???dT/df1/2 s near fs = 1 of CET and pure equiaxed crystals are the same. The predicted pressure drop of CET using our integrated model shows that the equiaxed crystals have a great impact on a the liquid feeding of columnar crystals when fs = 0.51.
入藏号: WOS:000634119600008
语言: English
文献类型: Article
作者关键词: Al-Li alloys; Solidification; Hot cracking; CFD; Phase-field method; Feeding pressure; Segregation
地址: [Chen, Dongxu; Wang, Junsheng; Zhang, Chi] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China.
[Wang, Junsheng] Beijing Inst Technol, Adv Res Inst Multidisciplinary Sci, Beijing 100081, Peoples R China.
通讯作者地址: Wang, JS (通讯作者)，Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China.
电子邮件地址: junsheng.wang@bit.edu.cn
出版商: ELSEVIER
出版商地址: RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS
Web of Science 类别: Materials Science, Multidisciplinary
研究方向: Materials Science
IDS 号: RE4II
ISSN: 0927-0256
eISSN: 1879-0801
29 字符的来源出版物名称缩写: COMP MATER SCI
ISO 来源出版物缩写: Comput. Mater. Sci.
来源出版物页码计数: 9
来自 Web of Science
275.
标题: Coupling phase-field model and CFD for hot cracking predictions of Al-Li alloys
作者: Chen, DX (Chen, Dongxu); Wang, JS (Wang, Junsheng); Zhang, C (Zhang, Chi)
来源出版物: COMPUTATIONAL MATERIALS SCIENCE 卷: 192 文献号: 110361 DOI: 10.1016/j.commatsci.2021.110361 出版年: MAY 2021
Web of Science 核心合集中的 "被引频次": 0
被引频次合计: 0
使用次数 (最近 180 天): 0
使用次数 (2013 年至今): 0
引用的参考文献数: 54
摘要: To improve the prediction of hot cracking, fluid flow, and dendritic growth must be investigated quantitatively and thus an integrated 2D model of coupling phase-field model together with CFD calculations was proposed in this work. First, a phase-field model for thermodynamics of binary Al-3.3wt.%Li was developed based on the CALPHAD database. The columnar dendrites with different orientation angles (0?-28?), different grain sizes of equiaxed grains, and columnar to equiaxed transition (CET) were simulated. Then, CFD calculations were performed based on geometries from simulated microstructure features to predict the inter-dendritic pressure distribution. The RDG model and Kou model were used to evaluate the hot cracking susceptibility (HCS) of these simulated microstructure features. Comparing to the RDG model, our simulations have shown that the feeding pressure drop varies as a function of grain orientation, while it is a constant in the RDG model. It is found that equiaxed crystals with large grain sizes have high HCS due to their large pressure drop as well as the narrow ??? liquid channel. The Kou model is considered unable to calculate the HCS of CET because the value of ???dT/df1/2 s near fs = 1 of CET and pure equiaxed crystals are the same. The predicted pressure drop of CET using our integrated model shows that the equiaxed crystals have a great impact on a the liquid feeding of columnar crystals when fs = 0.51.
入藏号: WOS:000634119600008
语言: English
文献类型: Article
作者关键词: Al-Li alloys; Solidification; Hot cracking; CFD; Phase-field method; Feeding pressure; Segregation
地址: [Chen, Dongxu; Wang, Junsheng; Zhang, Chi] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China.
[Wang, Junsheng] Beijing Inst Technol, Adv Res Inst Multidisciplinary Sci, Beijing 100081, Peoples R China.
通讯作者地址: Wang, JS (通讯作者)，Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China.
电子邮件地址: junsheng.wang@bit.edu.cn
出版商: ELSEVIER
出版商地址: RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS
Web of Science 类别: Materials Science, Multidisciplinary
研究方向: Materials Science
IDS 号: RE4II
ISSN: 0927-0256
eISSN: 1879-0801
29 字符的来源出版物名称缩写: COMP MATER SCI
ISO 来源出版物缩写: Comput. Mater. Sci.
来源出版物页码计数: 9
来自 Web of Science
笑研所 Loading4/20
截止到现在，牙套被遗忘了三次(･∀･)一次是出去吃饭包在纸巾里，一次是家庭聚餐包在纸巾里，一次是吃海底捞连盒子一起忘了哈哈哈哈哈
戴牙套最大的感受是嘴巴会干，戴到现在我已经比较少吸溜口水了，但是嘴唇会干。我平时就用笑研所一开始附赠礼包中的唇膏，早中晚各一次就能非常好的保持水润。
上周给我寄来了第8-12幅的牙套，戴到第10副的时候需要复诊，说是要再加附件。我从第12副牙套看到了牙齿的变化，嗨森(≧∇≦)#笑研所xiao-inst##北京牙齿矫正#
截止到现在，牙套被遗忘了三次(･∀･)一次是出去吃饭包在纸巾里，一次是家庭聚餐包在纸巾里，一次是吃海底捞连盒子一起忘了哈哈哈哈哈
戴牙套最大的感受是嘴巴会干，戴到现在我已经比较少吸溜口水了，但是嘴唇会干。我平时就用笑研所一开始附赠礼包中的唇膏，早中晚各一次就能非常好的保持水润。
上周给我寄来了第8-12幅的牙套，戴到第10副的时候需要复诊，说是要再加附件。我从第12副牙套看到了牙齿的变化，嗨森(≧∇≦)#笑研所xiao-inst##北京牙齿矫正#
#姜昇植SeungSik[超话]#
210419 昇植 Vapp 直播 Playlist
【두리와 뒷이야기】
Chess-VICTON
Attention-Charlie Puth
Done For me-Charlie Puth/Kehlani
Slightly Tipsy(inst)-燦多
陷入愛情-朴志胤
Fall in love with you- 姜昇植/酉奈
Secret-WH3N
If you leave me now-Charlie Puth/Boys II Men
Dangerously-Charlie Puth
End of a day-鐘鉉
安慰-權珍雅
香水-Busker Busker
公車站-Busker Busker
To You My Light-Maktub/Raon Lee
Dive-Ed Sheeran
Paris in the rain-Lauv
Boy with luv-BTS/Halsey
Lilac-IU
Borrow Your Light(Romance 101 X 10cm)-10CM
How can I love the heartbreak,you’re the one I love-樂童音樂家
*Playlist按直播順序排序 全
210419 昇植 Vapp 直播 Playlist
【두리와 뒷이야기】
Chess-VICTON
Attention-Charlie Puth
Done For me-Charlie Puth/Kehlani
Slightly Tipsy(inst)-燦多
陷入愛情-朴志胤
Fall in love with you- 姜昇植/酉奈
Secret-WH3N
If you leave me now-Charlie Puth/Boys II Men
Dangerously-Charlie Puth
End of a day-鐘鉉
安慰-權珍雅
香水-Busker Busker
公車站-Busker Busker
To You My Light-Maktub/Raon Lee
Dive-Ed Sheeran
Paris in the rain-Lauv
Boy with luv-BTS/Halsey
Lilac-IU
Borrow Your Light(Romance 101 X 10cm)-10CM
How can I love the heartbreak,you’re the one I love-樂童音樂家
*Playlist按直播順序排序 全
✋热门推荐