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タイトル: Cu-Ni-P系合金の析出強化特性に及ばすARB法および冷間圧延法の影響
その他のタイトル: Influence of Accumulative Roll Bonding and Cold Rolling Processes on the Precipitation Strengthening Properties for Cu-Ni-P Alloy
著者: 野村, 幸矢  KAKEN_name
三輪, 洋介  KAKEN_name
高川, 優作  KAKEN_name
渡邊, 千尋  KAKEN_name
門前, 亮一  KAKEN_name
寺田, 大将  KAKEN_name
辻, 伸泰  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0002-2132-1327 (unconfirmed)
著者名の別形: Nomura, Koya
Miwa, Yosuke
Takagawa, Yusaku
Watanabe, Chihiro
Monzen, Ryoichi
Terada, Daisuke
Tsuji, Nobuhiro
キーワード: copper-nickel-phosphorus alloy
accumulative roll-bonding process
tensile property
grain refinement strengthening
precipitation strengthening
dislocation strengthening
発行日: Sep-2011
出版者: 日本金属学会
誌名: 日本金属学会誌
巻: 75
号: 9
開始ページ: 509
終了ページ: 515
抄録: The enhancement of strength of a Cu-1.4 mass%Ni-0.25 mass%P-0.1 mass%Zr alloy, in which the Ni and P contents are about twice larger than those in commercial Cu-Ni-P alloys, has been tried by means of combining accumulative roll-bonding (ARB) process by 7 cycles and aging treatment at 350 to 450℃. For the sake of comparison, the mechanical properties of the alloy conventionally cold-rolled to a reduction of 50% and 90% and aged at 350 to 450℃ have also been examined. The grain sizes of the Cu-Ni-P-Zr specimens deformed by 7-cycle ARB process and 90% cold-rolling were refined down to about 0.4 μm and 4 μm, respectively, and the fractions of high angle grain-boundaries in the specimens were nearly the same, about 45%. Initial aging, subsequent ARB process or 90% cold-rolling and re-aging at 400℃ produced the Cu-Ni-P-Zr alloy highly strengthened. The alloy, initially aged, then ARB-processed and re-aged, had a tensile strength of 780 MPa, an elongation of 6% up to failure and an electrical conductivity of 56% IACS. The differences in yield strength among the re-aged specimens after 50% and 90% cold-rolling and ARB process are explained by the differences among the dislocation density, grain size and inter-precipitate spacing.
著作権等: © 2011 The Japan Institute of Metals
URI: http://hdl.handle.net/2433/171899
DOI(出版社版): 10.2320/jinstmet.75.509
出現コレクション:学術雑誌掲載論文等

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