摘要
研究了MGH956高温合金1000～1300℃的氧化行为。利用扫描电镜(SEM)和X射线衍射对氧化膜的形貌、组成进行了分析。结果表明:MGH956高温合金具有非常突出的抗高温氧化性能,1300℃仍能达到完全抗氧化,且没有发生内氧化。氧化膜的基体氧化物是α-Al2O3,与合金基体连接十分紧密,且连续、致密,晶粒非常细小,有一定塑性,是合金具有优异抗高温氧化能力的主要原因。
The oxidation behavior of MGH956 alloy on 1000 ～1300℃ was studied.Analysis on morphology and composition of oxide scale was carried out by SEM and X-ray diffraction.Results show MGH956 alloy has very excellent oxidation resistance up to 1300℃ and internal oxidation is not found.α-Al2O3 is the main phase of the scale which is very adherent to substrate,as well as integrative and dense.And the grain size of oxide scale is fine,which enhances plasticity of the scale.All of those make the alloy possess very excellent oxidation resistance.
出处
《航空材料学报》
EI
CAS
CSCD
北大核心
2010年第6期68-73,共6页
Journal of Aeronautical Materials
