【摘要】 利用JMatPro软件对W110埋弧焊丝熔敷金属在不同温度下的物理及力学性能、平衡相图和连续冷却曲线进行了分析计算,得到W110焊丝熔敷金属从室温到熔化温度下的热物理性能和部分力学性能的确定值。结果表明,该焊丝熔敷金属的奥氏体转变温度为692～779℃,在1330～1468℃温度区间存在高温铁素体相,固液相温度区间为1371～1468℃;在连续冷却过程中当冷速大于100℃/s时,无碳化物析出,当冷速在100℃/s和10℃/s之间时,有两种碳化物析出;当冷速在10℃/s和1℃/s之间时,有三种碳化物析出;当冷速在1℃/s和0.1℃/s之间时,有四种碳化物析出。更多还原

【Abstract】 By means of JMatPro software,the physical and mechanical properties,phase map and CCT curves of deposited metal of W110 wire for submerged welding were studied.The determinate values of heat physical properties and partial mechanical properties of the deposit metal of W110 wire from room temperature to melting temperature were obtained by calculation.The results indicate that the austenitic transformation temperature of the deposited metal of W110 wire is 692～779 ℃,δ-ferrite exists in 1330～1468 ℃,the solid and liquid phase lines is 1371～1468 ℃.During continue cooling,if cooling speed is higher than 100 ℃/s,there is not carbide in structure;when cooling speed is between 100 ℃/s and 10 ℃/s,two kinds of carbides separate out;if cooling speed is between 10 ℃/s and 1 ℃/s,three kinds of carbides exist;when cooling speed is between 1 ℃/s and 0.1 ℃/s,four kinds of carbides precipitate.更多还原