書誌事項
- タイトル別名
-
- Effect of hydrogen on fatigue fracture of type SUS316L stainless steel rod
- SUS316L コウボウザイ ノ ヒロウ ハカイ ニ オヨボス スイソ ノ エイキョウ
この論文をさがす
抄録
The rotate bending fatigue tests for type 316L austenitic stainless steel rods were carried out in air and in an electrolyte with electrochemical cathodic hydrogen charging. The electrolyte used was composed of 0. 05kmol•m-3 sulfuric acid with 1. 4kg•m-3 thiourea, and the employed current density was 49Am-2. Fatigue strength was noticeably decreased by hydrogen charging and the fatigue limit disappeared at the number of cycles up to 107. A considerable amount of α' martensite phase was detected on the fracture surface by X-ray diffraction measurement. The electron probe micro analysis made clear that nickel segregation existed in the central part of the rods, from which the fatigue test pieces were taken. In some area, nickel content was as low as 11mass%, which was almost 1mass% lower than the lower limit of the specification of the average nickel content for 316L. It is considered that the area with low nickel content transformed to martensite phase at the fatigue crack tip having high strain when fatigue cracks propagated. As the martensite phase was believed to be vulnerable against hydrogen, it is considered that the nickel segregation was the major cause of the degradation of fatigue properties in the hydrogen circumstance.
収録刊行物
-
- 圧力技術
-
圧力技術 47 (2), 78-84, 2009
一般社団法人 日本高圧力技術協会
- Tweet
詳細情報 詳細情報について
-
- CRID
- 1390001204615671040
-
- NII論文ID
- 130004446835
- 10024827161
-
- NII書誌ID
- AN00011762
-
- ISSN
- 13479598
- 03870154
-
- NDL書誌ID
- 10263004
-
- 本文言語コード
- ja
-
- データソース種別
-
- JaLC
- NDL
- CiNii Articles
-
- 抄録ライセンスフラグ
- 使用不可