摘要
通过研究可锻铸铁和铝合金耐张线夹的拉伸性能、冲击性能和耐腐蚀性能,为低温环境用电力金具提供技术参考。结果表明:铝合金线夹的抗拉强度为331.4 MPa,屈服强度为219.3 MPa,伸长率为12.8%,屈服强度和伸长率相对于可锻铸铁更高。铝合金在常温和低温情况下具有稳定的冲击韧度,未出现低温脆性。此外,铝合金相对于可锻铸铁(热镀锌)具有更好的耐腐蚀性能,腐蚀速率降低了两个数量级。
The tensile properties,impact properties and corrosion resistance of malleable cast iron and aluminum alloy strain clamp were investigated,which can provide a technical reference for power fittings applied in low-temperature environments.The results show that the aluminum alloy strain clip shows an ultimate tensile strength of 331.4 MPa,a yield strength of 219.3 MPa,and an elongation of 12.8%,and the yield strength and elongation are higher than those of the malleable cast iron.Aluminum alloy has stable impact toughness and no low temperature brittleness at room temperature and low temperature.In addition,aluminum alloy has better corrosion resistance than malleable iron(hot galvanizing),with corrosion rate reduced by two orders of magnitude.
作者
陈杰
曹少华
任永琼
童先
林继兴
CHEN Jie;CAO Shaohua;REN Yongqiong;TONG Xian;LIN Jixing(YONGU Group Co.,Ltd.,Wenzhou 325600,China;Department of Material Engineering,Zhejiang Industry&Trade Vocational College,Wenzhou 325003,China)
出处
《铸造技术》
CAS
2020年第9期826-830,共5页
Foundry Technology
基金
温州市重大科技计划项目(ZG2019022)
浙江省博士后基金(博士后编号:205357)。
关键词
电力金具
微观结构
力学性能
腐蚀性能
低温脆性
power fittings
microstructure
mechanical properties
corrosion properties
low-temperature brittleness
