Research on New Aluminium Alloy Strain Clamp Replacing Cast Iron in High and Cold Environment
Author of the article:CHEN Jie;CAO Shaohua;REN Yongqiong;TONG Xian;LIN Jixing
Author's Workplace：YONGU Group Co.,Ltd.,Wenzhou 325600,China;Department of Material Engineering,Zhejiang Industry&Trade Vocational College,Wenzhou 325003,China
Key Words：power fittings microstructure mechanical properties corrosion properties low-temperature brittleness
Abstract：
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.
