Fabrication of lotus-type porous Mg-Mn alloys by metal/gas eutectic unidirectional solidification
被引:11
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作者:
Zhou, Can-xu
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Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R ChinaTsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
Zhou, Can-xu
[1
]
Liu, Yuan
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机构:
Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
Tsinghua Univ, Key Lab Adv Mat Proc Technol, Minist Educ, Beijing 100084, Peoples R ChinaTsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
Liu, Yuan
[1
,2
]
Zhang, Hua-wei
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机构:
Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
Tsinghua Univ, Key Lab Adv Mat Proc Technol, Minist Educ, Beijing 100084, Peoples R ChinaTsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
Zhang, Hua-wei
[1
,2
]
Chen, Xiang
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机构:
Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
Tsinghua Univ, Key Lab Adv Mat Proc Technol, Minist Educ, Beijing 100084, Peoples R ChinaTsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
Chen, Xiang
[1
,2
]
Li, Yan-xiang
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Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
Tsinghua Univ, Key Lab Adv Mat Proc Technol, Minist Educ, Beijing 100084, Peoples R ChinaTsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
Li, Yan-xiang
[1
,2
]
机构:
[1] Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
[2] Tsinghua Univ, Key Lab Adv Mat Proc Technol, Minist Educ, Beijing 100084, Peoples R China
Lotus-type porous Mg-xMn (x=0, 1, 2 and 3 wt.%) alloys were fabricated by metal/gas eutectic unidirectional solidification (the Gasar process). The effects of Mn addition and the fabrication process on the porosity, pore diameter and microstructure of the porous Mg-Mn alloy were investigated. Mn addition improved the Mn precipitates and increased the porosity and pore diameter. With increasing hydrogen pressure from 0.1 to 0.6 MPa, the overall porosity of the Mg-2wt.%Mn ingot decreased from 55.3% to 38.4%, and the average pore diameter also decreased from 2465 to 312 mu m. Based on a theoretical model of the change in the porosity with the hydrogen pressure, the calculated results were in good agreement with the experimental results. It is shown that this technique is a promising method to fabricate Gasar Mg-Mn alloys with uniform and controllable pore structure.
机构:
Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
Tsinghua Univ, Minist Educ, Key Lab Adv Mat Proc Technol, Beijing 100084, Peoples R ChinaTsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
Liu, Yuan
Zhang, Hua-wei
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机构:
Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
Tsinghua Univ, Minist Educ, Key Lab Adv Mat Proc Technol, Beijing 100084, Peoples R ChinaTsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
Zhang, Hua-wei
Li, Yan-xiang
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h-index: 0
机构:
Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
Tsinghua Univ, Minist Educ, Key Lab Adv Mat Proc Technol, Beijing 100084, Peoples R ChinaTsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
机构:
Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R ChinaTsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
Zhou, Canxu
Liang, Gangqiang
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Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R ChinaTsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
Liang, Gangqiang
Liu, Yuan
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机构:
Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
Tsinghua Univ, Key Lab Adv Mat Proc Technol, Minist Educ, Beijing 100084, Peoples R ChinaTsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
Liu, Yuan
Zhang, Huawei
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机构:
Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
Tsinghua Univ, Key Lab Adv Mat Proc Technol, Minist Educ, Beijing 100084, Peoples R ChinaTsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
Zhang, Huawei
Chen, Xiang
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h-index: 0
机构:
Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
Tsinghua Univ, Key Lab Adv Mat Proc Technol, Minist Educ, Beijing 100084, Peoples R ChinaTsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
Chen, Xiang
Li, Yanxiang
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机构:
Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
Tsinghua Univ, Key Lab Adv Mat Proc Technol, Minist Educ, Beijing 100084, Peoples R ChinaTsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
机构:
Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R ChinaTsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
Yang, Qian-qian
Liu, Yuan
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机构:
Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
Tsinghua Univ, Minist Educ, Key Lab Adv Mat Proc Technol, Beijing 100084, Peoples R ChinaTsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
Liu, Yuan
Li, Yan-xiang
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机构:
Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
Tsinghua Univ, Minist Educ, Key Lab Adv Mat Proc Technol, Beijing 100084, Peoples R ChinaTsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
Li, Yan-xiang
Zhang, Yan
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Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R ChinaTsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China