材料工程Issue(6)：1-4,24,5.DOI:10.3969/j.issn.1001-4381.2013.06.001
热等静压温度对第三代单晶高温合金DD10组织的影响
Effect of Hot Isostatic Pressing Temperature on the Microstructure of a Third Generation Single Crystal Superalloy DD10
曹腊梅 1刘丽君 1陈晶阳 1薛明1
作者信息
- 1. 北京航空材料研究院先进高温结构材料重点实验室,北京100095
- 折叠
摘要
Abstract
The effects of different hot isostatic pressing temperatures on the microstructures of the third generation single crystal superalloy DD10 were investigated by using optical microscope (OM),scanning electron microscope (SEM) and electron microprobe analyzer (EPMA).The results show that the hot isostatic pressing temperature 1290℃ was enough for the microporosity of DD10 to be eliminated completely at 150MPa; the volume fraction of eutectic was decreased markedly with the increase of the hot isostatic pressing temperature.The eutectic disappeared with hot isostatic pressing of 1310℃ or above,and there were internal incipient melting after hot isostatic pressing at 1340℃/150MPa.Meanwhile,the hot isostatic pressing process with different temperatures also resulted in more uniform morphology of γ' precipitates to the same extent.The dendritic segregation was homogenized gradually because of increasing of the hot isostatic pressing temperature.关键词
DD10/热等静压/温度/显微疏松/共晶/枝晶偏析Key words
DD10/hot isostatic pressing/temperature/microporosity/ eutectic/dendritic segregaton分类
矿业与冶金引用本文复制引用
曹腊梅,刘丽君,陈晶阳,薛明..热等静压温度对第三代单晶高温合金DD10组织的影响[J].材料工程,2013,(6):1-4,24,5.
