Effects of Surface Structure and Hydrogen on the Fatigue Strength of Electroless Nickel-Phosphorus Plated Al-2%Cu Alloy
| Autor: | Makoto Hino, Norihito Nagata, Teruto Kanadani, Keiyu Nakagawa, Keitaro Horikawa |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Hydrogen Mechanical Engineering Phosphorus Metallurgy Alloy technology industry and agriculture chemistry.chemical_element 02 engineering and technology engineering.material equipment and supplies 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Fatigue limit Electroless nickel chemistry Mechanics of Materials 0103 physical sciences engineering Surface structure General Materials Science 0210 nano-technology |
| Zdroj: | Materials Science Forum. 941:1821-1826 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.941.1821 |
| Popis: | In this study, the effect of the surface structure and hydrogen on the fatigue strength of electroless Ni-P plated Al-2%Cu alloy was investigated. As the results, the following points were clarified. Large precipitates were recognized near the specimen surface of the furnace-cooled Al-Cu alloy, but these were not recognized in the aged Al-Cu alloy. Fatigue strength of the Al-Cu alloy specimen subjected to Ni-P plating after a furnace cooling treatment was overall reduced rather than one of the non-processed specimens. Fatigue strength of the Al-Cu alloy specimen subjected to Ni-P plating after the aging treatment showed a clear increase in comparison to one of non-processed materials. In the Al-2%Cu alloy specimens subjected to Ni-P plating after the furnace cooling treatment or aging treatment, a clear hydrogen desorption was recognized. On the other hand, there was only hydrogen desorption from a few of the non-processed specimens. It is considered that the poor fatigue strength of the plating materials is mainly due to the interaction between the surface precipitates and hydrogen gas. |
| Databáze: | OpenAIRE |
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