The influence of moisture in air on fatigue crack propagation characteristics of high-strength steels.
-
- ASAMI Katsutoshi
- Musashi Institute of Technology
-
- EMURA Hideki
- Musashi Institute of Technology
Bibliographic Information
- Other Title
-
- 高強度鋼の疲労き裂進展に及ぼす大気中水分の影響
- コウ キョウド コウ ノ ヒロウ キレツ シンテン ニ オヨボス タイキチュウ
Search this article
Abstract
In order to clarify the influence of moisture in air on fatigue crack propagation characteristics of high strength steels, fatigue tests were conducted in laboratory air and dry air using CT specimens.<br>The following results were obtained:<br>(1) In case of low stress ratio (R=0.1), the retardation-effect by moisture in air was recognized in low ΔK region (stage 2a) of the specimen whose tensile strength was below about 2000MPa. This behavior was explained due to the oxide-induced crack closure promoted by moisture in air.<br>(2) In case of high stress ratio (R=0.8), the acceleration-effect by moisture in air was recognized in the medium ΔK region (stage 2b) of the specimen whose tensile strength was higher than 1000MPa. This acceleration-effect might be caused by the hydrogen embrittlement which occurred near the specimen surface, and became more remarkable when the test frequency was low.
Journal
-
- Journal of the Society of Materials Science, Japan
-
Journal of the Society of Materials Science, Japan 39 (439), 425-431, 1990
The Society of Materials Science, Japan
- Tweet
Keywords
Details 詳細情報について
-
- CRID
- 1390282680368841728
-
- NII Article ID
- 110002297592
-
- NII Book ID
- AN00096175
-
- COI
- 1:CAS:528:DyaK3cXks1egsr0%3D
-
- ISSN
- 18807488
- 05145163
- http://id.crossref.org/issn/05145163
-
- NDL BIB ID
- 3661137
-
- Text Lang
- ja
-
- Data Source
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- Abstract License Flag
- Disallowed