書誌事項
- タイトル別名
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- An Antiferromagnetic Invar-Type Alloy “VOLCOLOY” in the Mn-Ge System
- Mn Geケイ ハン キョウジセイ インバーカタ ゴウキン VOLCOLOY
- An Antiferromagnetic Invar-Type Alloy “VOLCOLOY” in the Mn-Ge System
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説明
The thermal expansion, magnetic properties, electrical resistivity, lattice constant and hardness of Mn-Ge alloys cooled at various rates after homogenizing at 50 K below the melting point for 1.8-86.4 ks were investigated. It has been found that the alloys containing about 15-25 at%Ge consist of the mixture of a paramagnetic fcc γ-phase and a ferrimagnetic fct ε1-phase at room temperature.<BR>The ε-phase is stable for all heat-treatments except the cooling rate less than 0.19×10−3 K/s, showing antiferromagnetism at room temperature. The Mn-Ge alloys consisting of ε-phase exhibit the Invar characteristics below the Néel temperature, and a representative linear thermal expansion coefficient at room temperature is 0.3×10−6 K−1 in the Mn-23.2 at%Ge alloy. The magnetization of the ε-phase alloys is 0.6×10−6 Wb·m/kg at the maximum, and their electrical resistivity shows a minimum at the Néel temperature.<BR>The machinability of the ε-phase alloys is fairly good, but the hot-forging and swaging are not so easy because the hardness is remarkably high.
収録刊行物
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- 日本金属学会誌
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日本金属学会誌 46 (3), 291-296, 1982
公益社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390282681460783744
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- NII論文ID
- 130007336596
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- NII書誌ID
- AN00187860
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- ISSN
- 18806880
- 24337501
- 00214876
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- NDL書誌ID
- 2444538
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- JaLC
- NDL
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