钛含量对低镍铜合金显微组织和性能的影响

张强; 余新泉; 王书强; 陆筱彬; 谢建平; 甘美露

钛含量对低镍铜合金显微组织和性能的影响

1.
江阴市产品质量监督检验所, 江阴 214434
2.
东南大学材料科学与工程学院, 南京 211189

基金项目:

江苏省重大科技成果转化专项资金项目(BA2009035)

详细信息

作者简介:
张强(1986-), 男, 江苏江阴人, 工程师, 硕士。

中图分类号: TG146.2
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出版历程
- 收稿日期: 2014-08-31
- 刊出日期: 2014-10-19

Influence of Ti Content on Microstructure and Properties of Low-Nickel Copper Alloys

摘要

摘要: 采用真空感应熔炼法制备了不同钛含量的Cu-2.8Ni-1.1Fe-0.9Mn-xTi (x=0～1.79%, 质量分数) 低镍铜合金, 采用显微组织观察、拉伸试验和腐蚀试验等研究了钛含量对合金显微组织、力学性能及在模拟海水中耐腐蚀性能的影响。结果表明: 低镍铜合金中加入少量钛后, 晶粒明显细化, 组织中有细小弥散分布的第二相析出, 并随钛含量的增加而增多, 当合金中钛含量为1.79%时, 组织中还出现了大尺寸块状相; 随着钛含量的增加, 低镍铜合金的强度和硬度逐渐提高, 而塑性则有一定下降; 在模拟海水中加钛铜合金的腐蚀速率随钛含量的增加先降后升, 且均小于不加钛的铜合金, 钛含量为0.88%时, 腐蚀速率最低, 为14.486 6 mg·m-2·h-1。
- 铜合金 /
- 钛含量 /
- 显微组织 /
- 力学性能 /
- 耐蚀性能
Abstract: Cu-2.8Ni-1.1Fe-0.9Mn-xTi low-nickel copper alloys with different contents of Ti (x=0～1.79%, mass) were prepared by vacuum induction melting. The effects of Ti content on microstructure, mechanical properties and corrosion resistance in simulated seawater of the copper alloy were studied by microstructure observation, tensile testing and corrosion testing. The results show that the grain size decreased obviously, and the small and dispersed phases precipitated with adding element Ti in the low-nickel copper alloy; the precipitation phases increased with increasing the Ti content; besides the small and dispersed phases, massive phases appeared in the copper alloy with 1.79% Ti added. The tensile strength and hardness of the low-nickel copper alloy improved gradually and the plasticity slightly decreased with the increase of Ti content. The corrosion rates of the copper alloys with Ti in simulated seawater first decreased and then increased with the increase of Ti content, but all of them were lower than that of the copper alloy without Ti. The copper alloy with 0.88% Ti has the lowest corrosion rate, 14.486 6 mg·m-2·h-1.
- copper alloy /
- Ti content /
- microstructure /
- mechanical property /
- corrosion resistance

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参考文献(18)

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钛含量对低镍铜合金显微组织和性能的影响

作者简介: 张强(1986-), 男, 江苏江阴人, 工程师, 硕士。

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出版历程

Influence of Ti Content on Microstructure and Properties of Low-Nickel Copper Alloys

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出版历程

目录

作者简介:
张强(1986-), 男, 江苏江阴人, 工程师, 硕士。