Study on the SPWHT Low Temperature Impact Properties of Explosive Clad Plate Substrate SA516Gr70
Focusing on the phenomenon of low temperature impact properties nonconformity of the explosive clad plate substrate SA516Gr70,the paper analyses and studies the effects of production process and microstructure on the low temperature impact properties.The results show that the higher content of the residual element P in the steel,the smaller draft at rough rolling stage,poorer uniformity of grain size and microstructure are the major causes of impact properties nonconformity.Therefore,the steel plate qualification rate of the low temperature toughness and impact prop-erties is increased by optimizing and improving the design of chemical composition and rolling process.
SA516Gr70Simulated post welding heat treatmentLow-temperature impact toughnessHarmful el-ementDraft
NETL
NSTL
万方数据
