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渗铝处理对镍基超合金Hastelloy X高温氧化行为的影响研究

Hanyu YANG,Qianyi CHEN,Haoran CHEN,Haoran LI,Yifei WU,Qiang LIU

Hot Working Technology（2016）

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Abstract
对镍基超合金HastelloyX进行渗铝处理,并对渗铝层的高温循环氧化性能和微观组织进行分析.结果表明:经950℃×9h固体渗铝处理后,在镍基超合金HastelloyX表面生成厚度约75 μm的Ni-Al合金层,并有细小的析出相产生,同时在合金层与基材之间有厚约5.5 μm的中间扩散层生成.渗铝处理后的HastelloyX试片具有较佳的抗高温氧化能力.中间扩散层在多次高温循环氧化之后开始产生横向裂痕,对铝化HastelloyX的抗高温氧化能力不利.
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