The Effect of Surface Machining on the High-Temperature Oxidation of a Single Crystal Ni-Based Superalloy

被引：8

作者：

Sun, Nairong ^{[1
]}

Zhang, Lanting ^{[1
]}

Li, Zhigang ^{[1
]}

Sun, Feng ^{[1
]}

Dong, Xianping ^{[1
]}

Shan, Aidang ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200240, Peoples R China

来源：

MATERIALS TRANSACTIONS | 2014年 / 55卷 / 10期

关键词：

superalloy; surface machining; residual stress; oxidation; STRESS-INDUCED DIFFUSION; OXIDE SCALES; BEHAVIOR; NICKEL; ALLOY; KINETICS; FAILURE; LATTICE; TENSILE; CHROMIUM;

D O I：

10.2320/matertrans.M2014077

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Single crystal samples were subjected to different surface compressive finishing conditions on [001] oriented surfaces. The initial surface residual compressive stresses were determined to be 901, 635 and 0 MPa, respectively. Isothermal oxidation in ambient atmosphere at 1573 and 1273 K resulted in a reduction of oxide scale thickness and a change of primary oxides from nickel oxide to alumina on deformed surface. Such result can be attributed to the increased diffusivity of aluminum beneath the deformed surface at high temperatures.

引用

页码：1540 / 1546

页数：7

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