書誌事項
- タイトル別名
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- Extra Long Life Fatigue Properties of Aluminum Die Casting Materials
- アルミニウム ゴウキン ダイカスト ノ チョウチョウジュミョウ ヒロウ キョウド トクセイ
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説明
To investigate the extra long life fatigue properties of aluminum die casting materials, fatigue tests were conducted on two type of aluminum die casting materials. One type is Al-Si-Cu die casting alloys ADC10-T5 and the other is Al-Si-Mg die casting alloys AC4C-T6. The main results obtained are as follows, (1) For ADC10-T5, the origin of fatigue crack is casting defect and the fracture surface at around the fatigue crack initiation portions were Mode I fracture surface. (2) For AC4C-T6, the origin of fatigue crack is the base matrix and the fracture surface at around the initiation portion changed from Mode I fracture surface to Mode II fracture surface along with the increase in the number of cycles. At the range of Nf < 105 or about Nf = 105, fracture surface were Mode I fracture surface, about Nf = 106, fracture surface were mixture of Mode I and Mode II fracture surface, and at the range of Nf > 107, fracture surface were Mode II fracture surface. (3) The extra long life fatigue strength (107-109cycles) of AC4C-T6 decreased along with the increase in the number of cycles, while the extra long life fatigue strength (107-109cycles) of ADC10-T5 did not decrease along with the increase of the number of cycles. (4) The casting defect size in non-fracture specimen was much smaller than the allowable defect size predicted by the √area parameter model. It seems to be that the reason why no reduction was recognized in the fatigue strength of the ADC10-T5 in the life range beyond 107cycles.
収録刊行物
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- 材料
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材料 55 (3), 295-300, 2006
公益社団法人 日本材料学会
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詳細情報 詳細情報について
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- CRID
- 1390001205418586752
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- NII論文ID
- 110006570916
- 30020595892
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- NII書誌ID
- AN00096175
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- ISSN
- 18807488
- 05145163
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- NDL書誌ID
- 7884892
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- 本文言語コード
- ja
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- JaLC
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