碳对镍基单晶高温合金AM3凝固组织的影响

1.西北工业大学凝固技术国家重点实验室,陕西西安710072;西安科技大学,陕西西安710054

2.西北工业大学凝固技术国家重点实验室,陕西西安710072

3.西北工业大学凝固技术国家重点实验室,陕西西安710072

4.西北工业大学凝固技术国家重点实验室,陕西西安710072

5.西北工业大学凝固技术国家重点实验室,陕西西安710072

6.西北工业大学凝固技术国家重点实验室,陕西西安710072

Effect of Carbon on the Solidification Microstructure of Single Crystal Ni-Based Superalloy AM3

研究了碳(C)对第一代镍基单晶高温合金AM3显微组织的影响.结果表明,随着碳含量的增加,枝晶形貌和间距无明显变化,合金中共晶的数量明显减少,一次碳化物逐渐增多.该合金中一次碳化物形貌通常为块状、骨架状和汉字状.当含碳量较高时,碳化物形貌为由骨架状连接形成的网状碳化物(汉字状碳化物).

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