冷变形Cu基弹性合金的疲劳研究

The Study of Fatigue Properties of Cold-Rolled Cu-Base Elastic Alloys

研究了冷变形状态Ｃｕ－１５Ｎｉ－１３Ｍｎ－２８Ｚｎ合金的疲劳性能．结果表明：添加（１）０．１Ｔｉ（２）０．０４Ｃｅ＋０．００３Ｂ可使合金的疲劳寿命稍有提高．另外，在所研究合金中增大变形量，也使疲劳 寿命有所提高．利用ＳＥＭ对疲劳断口进行了分析，结果表明：断口的主要特征为脆性形貌， 可观察到疲劳条纹．

Effect of trace element on the fatigue properties of Cu-15Ni-13Mn-28Zn elastic a lloys has been investigated. The fatigue fracture was observed SEM. The results showed that adding 1) 0.1 Ti 2) 0.04Ce+0.003 B can improve the fatigue life slig htly. Increasing cold strain has the similar effect. The chief character of frac ture is brittle. In some area, fatigue striation can be observed.