【作者】 蔡薇； 黄国杰； 柳瑞清； 陈君兰； 李莉；

【Author】 Cai Wei Liu Ruiqing Chen Junlan Li Li (Jiangxi University of Science and Technology,Ganzhou 341000,China)

【机构】 江西理工大学； 北京有色金属研究总院有色金属材料制备加工国家重点实验室；

【摘要】 在复杂铝黄铜(72.5Cu-22.7Zn-3.4Al)中添加微量钴(0.01%、0.03%、0.05%),研究微量钴、熔炼铸造工艺及加工工艺参数对轧制法生产的带材的机械性能的影响.探索采用复杂铝黄铜替代目前广泛使用的弹性铜合金材料—锡磷青铜的可行性。研究结果显示:钴能有效减少铸态合金的晶粒尺寸、改变晶粒的形状,提高合金的抗拉强度、硬度,并保证合金具有较好的延展性。铝黄铜中添加0 03%钴,采用合理的生产工艺生产出的黄铜带具有比锡磷青铜更优异的性能,0.25mm 厚的带材,其抗拉强度可达840.4MPa、伸长率为2.8%、维氏硬度值为228,比特硬状态的 QSn6.5-0.1带材的抗拉强度最大值(805MPa)提高了4.4%,满足弹性元件的使用要求;同时,由于该黄铜中含有22.7%的锌,可有效降低成本, 具有实际应用价值。更多还原

【Abstract】 study the effect of Co on the structure and the mechanics function of aluminum brass by Adding a little amount Co(0.01%,0.03%,0.05%)to complicated aluminum brass(72.5Cu-22.7Zn-3.4Al) to investigate the possibility of substituting complicated aluminum brass for phosphorus bronze which is now extensively used for elastic component. The research result shows that grains of as-cast alloy can be refined clearly by adding a little amount of Co The tensile strength and hardness are improved,and the alloy has quit good ductility.With 0.03% Co in the aluminum brass and reasonable craft,the aluminum brass has more excellent characteristics than phosphorus bronze.The tensile strength, ductility and HV of strip of 0.25mm are 840MPa, 2.8% and 228 that satisfy the usage request of the elastic component.The tensile strength raises about 4.4% comparing with the max.strength of strip of QSn6.5-0.1(805MPa).The cost is cheaper than phosphorous bronze because of implying 22.7% zinc in that brass,which has the actual application value.更多还原