The high-temperature ductility deteriorates and intra-granular strength increases with an increases of dynamic precipitation of carbide.
结果表明：晶内强度随碳化物动态析出量的增加而上升，高温塑性随之而降低。
At room temperature and high temperature the tensile strength of the forging decreases firstly and then increases while the ductility changes on the contrary.
室温和高温拉伸强度随锻造火次的增加呈现先减少后增加的趋势，塑性则先增加后减小。
After magnesium treatment the ductility of steel was increased at high temperature.
镁处理对改善钢材的高温塑性有益。
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