摘要
为探索多火次不同变形量对GH4133A合金晶粒度与拉伸性能的变化规律,文章在1160℃下对GH4133A合金进行了每火次变形量10%和30%的多火次锻造,试验结果表明,采用每火次变形程度为10%进行多火次锻造对GH4133A合金细化效果不明显,采用每火次变形程度为30%进行多火次锻造对GH4133A合金晶粒细化效果显著,当进行30%变形的3火次锻造后组织最细小、均匀。但是拉伸性能并没有呈现出与晶粒细化一致的趋势。断口分析表明,随着锻造火次增加,晶界处有害相析出是限制细晶组织强度提高的直接原因。
In this thesis,the repeated firing forging at 1160℃ with two deformations of 10% and 30% were carried out in order to explore the effects of repeated firing forging on microstructure and mechanical properties of GH4133A alloys.The results indicate that：it has the best effect on refine grain under 30% deformation,but the grain size decreased as heating number under 10% deformation.It have the best refine grain that the specimen under deformation of 30% by three firing forging,but the properties is not the best one with the refine grain,so the fracture surface analysis were carried out：it is The interstitial phase in grain boundary that limit the strength of refine grain because of the repeated heating.
出处
《塑性工程学报》
EI
CAS
CSCD
北大核心
2008年第4期98-101,共4页
Journal of Plasticity Engineering
关键词
GH4133A合金
多火次锻造
组织
拉伸性能
断口分析
GH4133A alloys
repeated firing foring
microstructure
mechnical properties
fracture surface analysis
