書誌事項
- タイトル別名
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- Orientation Dependence of High-Angle Grain Boundary Formation during Sliding Wear in Copper Single Crystals
- ドウタンケッショウ ノ スベリ マサツ ニ トモナウ ダイカク リュウカイ ケイセイ ノ ケッショウ ホウイ イソンセイ
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説明
Sliding wear tests were conducted on copper single crystals having (110) and (111) surface, and polycrystalline copper. Evolution of high-angle grain boundaries during the sliding wear was investigated by the electron backscatter diffraction (EBSD) technique. The high-angle grain boundaries, which were formed in the vicinity of the worn surface, could be classified into two kinds from their morphology: one is parallel to the worn surface (Type A high-angle boundary) and the other is a grain boundary surrounding an equiaxed fine grain (Type B high-angle boundary). At Type A high-angle boundaries, a rotational axis between adjoining grains was almost parallel to z-axis which is defined as the direction perpendicular to both wear direction and worn surface normal. Grain boundary character distribution of Type A boundaries was sensitive to crystallographic orientation of the z-axis. When the z-axis was <110>, orientation relationship of Σ33a had high frequency. On the other hand, high Σ31a frequency was obtained at the sliding wear occurring under <111> z-axis condition. It is concluded that the evolution of Type A boundaries was caused by lattice rotation induced by sliding wear. For Type B high-angle boundaries, fractions of low-Σ coincident site lattice (CSL) boundaries were high, and the frequency distribution of CSL boundaries was almost independent of wear direction and worn surface orientation. Unlike Type A boundaries, rotational axes at Type B boundaries showed no preferred orientation. These crystallographic features suggest that recrystallization is the most plausible origin for Type B boundary evolution. Consequently, the high-angle boundaries were produced probably by two different processes during sliding wear.<br>
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 74 (6), 384-391, 2010
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
- 1390001206478728320
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- NII論文ID
- 10026403054
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- NII書誌ID
- AN00187860
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- COI
- 1:CAS:528:DC%2BC3cXpslOgur0%3D
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- ISSN
- 18806880
- 24337501
- 00214876
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- NDL書誌ID
- 10691484
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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
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可
