| 号数 | ばね論文集４２号（１９９７年） |
| ページ数 | pp.31-37 |
| 種類 | 論文 |
| 論文名 | 薄板りん青銅の高温引張強度 |
| Title | Elevated Temperature Tensile Strength of Thin Sheet Phosphor bronzes |
| 著者 | 国峯 辰雄1)・吉岡 慎一1)・松江 清美1)・岡部 賢2)・高島田 政紀3) |
| Author | Tatsuo KUNIMINE1)・Shinichi YOSHIOKA1)・Kiyomi MATSUE1)・Ken OKABE2)・Masanori TAKASHIMADA3) |
| 抄録 | Ｓｎ４％，５％，６％，７％，８％，板厚０．３ｍｍのりん青銅の高温および常温引張試験を行い，次の結果を得た。 1)高温引張における荷重‐伸び線図は，Ｓｎ含有量に関係なく，４７３Ｋ〜５７３Ｋ（低温焼鈍温度）間にセレーションが現われる。常温引張では現れない。 2)高温引張における引張強さは，６２３Ｋ以上ではＳｎ含有量に依存しない。常温引張における引張強さは，７２３Ｋ付近からＳｎ含有量に依存する。 3)高温引張におけるＳｎ４％，５％の絞りは，３７３Ｋで最小値を示し，７５０Ｋで最大値を示す。Ｓｎ７％，８％の絞りは，６２３Ｋで最小値を示し，７４０Ｋで最大値を示す。高温引張では脆化温度域が現れる。常温引張では現れない。 4)高温引張におけるビッカース硬さと引張強さの関係は，Ｓｎ含有量に関係なく，２本の直線で近似でき，ビッカース硬さ１８０付近，引張強さ２８０ＭＰａに変化点が存在する。 |
| Abstract | Elevated temperature and room temperature
tension properties of phosphor bronzes containing
4%, 5%, 6%, 7% and 8%Sn, with thickness of
0.3mm are investigated. Results are as follows; 1) Serration appears at 473-573K on Load-Elongation diagrams for elevated temperature tension test. And the relation has nothing to do with Sn content. Serration does not appear in case of room temperature tension test. 2) Tensile strength does not depend on Sn content above 623K for elevated temperature tension test. Tensile strength depends on Sn content above 723K for room temperature tension test. 3) Reduction of area of Sn 4%, 5%reaches to the minimum at 373K and reaches to the maximum at 750K, and that Sn 7%, 8% reaches to the minimum at 623K and reaches to the maximum at 740K for elevated temperature tension test. Shortness temperature area does appear in case of elevated temperature tension test. Shortness temperature area does not appear in case of room temperature tension test. 4) There is an inflection point at around 280MPa, HV180 on the curve of relation between elevated temperature tensile strength and Vickers hardness. This relation seems to be represented by two straight lines, and the relation has nothing to do with Sn content. |
| 著者の所属 | 1)日本ベルパーツ株式会社 2)株式会社原田伸銅所 3)東海大学 |
| Belonging | 1)Nippon Bell Parts Co., Ltd. 2)Harada Metal Industry Co., Ltd. 3)Tokai University |
| Key Words | Tensile strength, Reduction of area, Phosphor bronze, Elevated temperature tension test |