@techreport{oai:kanazawa-u.repo.nii.ac.jp:00046305, month = {Jun}, note = {仕上げに60%冷間圧延を行なう加工熱処理を施したCu-1.0%Ni-0.2%P 合金及びNiの一部をFeで置換したCu-Ni-Fe-P合金の強度へのFeの影響を調査した.Cu-0.8%Ni-0.2%Fe-0.2%P合金(0.2Fe)の0.2%耐力及び引張強さが最も高く,それぞれ660MPa,700MPaであり,従来のCu-Ni-P系合金より強度の高い合金を作製できた.加工熱処理の最後に80%極低温圧延を0.2Fe合金に適用した結果,耐力700MPa,引張強さ740MPaであり,さらに強度が増加した.これは転位密度と変形双晶密度がより高いことに起因する., The influence of Fe on the strength of Cu-Ni-Fe-P alloys has been investigated using Cu-1.0%Ni-0.2%P (0%Fe) and Cu-(0.9, 0.8 and 0.7)%Ni-(0.1, 0.2 and 0.3)%Fe-0.2%P (0.1, 0.2 and 0.3%Fe) alloys pre-aged at 450 degrees for 5min, cold-rolled to a 40% reduction, peak-aged at 450 degrees and finally cold-rolled to a 60% reduction (60R). Of the 0%Fe-60R, 0.1%Fe-60R, 0.2%Fe-60R and 0.3%Fe-60R alloys, the 0.2%Fe-60R alloy has the highest 0.2% proof stress of 660MPa and the highest tensile strength of 700MPa. The proof stress and tensile strength of the 0.2%Fe alloy pre-aged at 450 degrees, cold-rolled to a 40% reduction, peak-aged at 450 degrees and finally cryo-rolled to an 80% reduction (80%CR) are 700 and 740MPa and 40MPa higher than those of the 0.2%Fe-60R alloy. The higher proof stress of the 0.2%Fe-80CR alloy than the 0.2%Fe-60R alloy is ascribed to the higher dislocation density and the larger amount of deformation twins in the 80CR alloy., 研究課題/領域番号:23560831, 研究期間(年度):2011-2013, 出典:「高強度・高導電性を有するCu-Ni-Fe-P合金の開発」研究成果報告書 課題番号23560831 (KAKEN:科学研究費助成事業データベース(国立情報学研究所)) (https://kaken.nii.ac.jp/report/KAKENHI-PROJECT-23560831/23560831seika/)を加工して作成}, title = {高強度・高導電性を有するCu-Ni-Fe-P合金の開発}, year = {2014} }