The micro-structure and mechanical performance of Nickel-based single crystal alloy

Abstract

Because of the increasing temperature in front of turbine in aero-engine field, Ni-base single crystal alloys are of high demand, which achieve high strength at high temperature. Therefore, a variety of methods have been developed to detect or describe nickel-base single crystal alloys. This article will take stock of the alloy valve and the mainstream description of valve methods. This paper will describe the basic micro-mechanism of rafting. Then the channel width method, which is the most widely used method to describe the degree of rafting, is introduced. After that, the updated version of the channel width method, the method to describe the rate of rafting and the effect on its strength, and the related methods of image processing are described. It is hoped that this paper can help readers to have a preliminary understanding of the principle and mathematical description method of nickel-base alloy rafting. There are many branches of mathematical description, but the main ideas are very similar. It is hoped that the researchers concerned will be able to develop some mathematical models that require fewer measurement parameters but not reducing the overall accuracy of the measuremen.