论文标题
表面处理对713C中高温氧化行为的影响
Effect of Surface Treatment on High-Temperature Oxidation Behavior of IN 713C
论文作者
论文摘要
已经研究了表面制剂对713C中市售基于Ni的超合金的氧化动力学和氧化物量表形态的影响。地面和抛光样品在800-1100c的空气中暴露在空中。发现地面标本与抛光后相比表现出较低的氧化动力学。磨削还影响了氧化物量表的形态，从而产生了保护氧化铝量表，而抛光的样品在表面上产生了富含NI-/CR的混合氧化物。地面表面的更好的氧化耐药性与冷工作引入的近乎表面区域的缺陷浓度有关。这些缺陷有助于缩放元素Al的向外运输，因此对保护性氧化是有益的。引入了较低温度下的氧化机制。提出了基于广义的深色方法和多相近似的模型。
The effects of surface preparations on oxidation kinetics and oxide scale morphology for the commercially available Ni-based superalloy IN 713C have been investigated. The ground and polished samples were exposed in air at 800-1100C. The ground specimens were found to demonstrate lower oxidation kinetics compared to those after polishing. The grinding also affected the oxide scale morphology, resulting in a protective alumina scale, while the polished samples developed Ni-/Cr-rich mixed oxides on the surface. Better oxidation resistance of the ground surfaces is related to a higher concentration of defects in the nearsurface region introduced by cold working. These defects facilitate the outward transport of the scaleforming element Al and thus are beneficial for protective oxidation. The oxidation mechanism at lower temperatures was introduced. The model based on the generalized Darken method and multiphase approximation was proposed.
