書誌事項
- タイトル別名
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- Effect of grain Size of localized deformation near grain boundaries in Al-1mass%Mg2Si base alloys.
- Al-1%Mg2Si基合金の粒界近傍における局部変形に及ぼす結晶粒径の影響
- Al 1パーセント Mg2Siキ ゴウキン ノ リュウカイ キンボウ ニ オケ
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抄録
Localized deformation near grain boundaries in Al–1 mass%Mg2Si–0.4 mass%Si alloys with and without 0.14 mass% Mn were investigated by scanning tunneling microscopy in relation to the grain size. Test pieces with gage length of 18 mm and width of 6 mm were cut from cold-rolled sheets, solutionized at 848 K, water-quenched peak-aged at 423 K and finally deformed in tension at room temperature at a strain rate of 1.86×1O−4s−1. The average grain size of the Mn-bearing and Mn-free alloys was 60 (small-grained) and 400 μm (large-grained) after heat treatment, respectively. Although elongation was increased upto about 8% strain by the manganese addition, the small-grained specimen had an intergranular fracture surface as well as the large-grained one. Fold formation mechanism in the small-grained specimen seemed to be the same as that in the large-grained specimen, and small surface cracks were observed occasionally at the grain boundaries having folds. In the small-grained specimen, step height at some grain boundaries attained a large value of about 1.5 μm. Frequencies of fold formation in the large-grained specimen reached to about 40% of all triple points in the gage area, while it was only about 10% in the small-grained specimen.
収録刊行物
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- 軽金属
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軽金属 47 (2), 104-109, 1997
一般社団法人 軽金属学会
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詳細情報 詳細情報について
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- CRID
- 1390001206337934464
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- NII論文ID
- 10003795029
- 10004010833
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- NII書誌ID
- AN00069773
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- COI
- 1:CAS:528:DyaK2sXitVehtrc%3D
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- ISSN
- 18808018
- 04515994
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- NDL書誌ID
- 4139959
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
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- 抄録ライセンスフラグ
- 使用不可