摘要
实验结果表明,M17铸造高温合金(%:0.16C、8.79Cr、5.79A1、4.93Ti、3.29Mo、15.20Co、0.78V、0.015B、0.073Zr、0.002S、0.001P、0.001 1O、0.001 0N)经25 kg真空感应炉返回重熔后,Si含量随重熔次数的增加而略有增加,合金中主要元素和其它杂质元素S、P、H的含量变化不大,而氧、氮略有增加;合金中初生碳化物由新合金中的草书体逐渐向返回合金块状转变,初生碳化物的遗传性堵塞合金凝固时的补缩通道,使返回料合金的疏松倾向增大,高温塑性下降较大。
Test results showed that for smelting of recycled casting superalloy M17 （0. 16C, 8.79Cr, 5.79A1, 4. 93Ti, 3. 29Mo, 15.20Co, 0. 78V, 0. 015B, 0. 073Zr, 0. 002S, 0. 001P, 0. 001 10, 0. 001 ON） by a 25 kg vacuum induction furnace, with increasing repeated smelting number of times, the Si content in alloy increased slightly, while the change of main elements in alloy and deleterious element S, P and H was not appreciable, and the O and N content tended to increase; and the morphology of primary carbides in alloy changed from Chinese script-type in fresh alloy to blocky type in recycled alloy, the inheritance of primary carbides interrupted the back feeding shrinkage passage during alloy solidification to increase the tendency of porosity formation and significantly decrease the plasticity of alloy at elevated temoerature.
出处
《特殊钢》
北大核心
2008年第3期27-29,共3页
Special Steel
关键词
铸造高温合金M17
重复熔炼
返回合金
成分
组织
性能
Casting Superalloy M17, Recycled Smelting, Recycled Alloy, Chemical Composition, Structure, Properties
