Development of Observation System for Microdeformation Behaviorin Multi-Phase Material by White Light Interferometry

材料的力学性能主要由其微观结构决定，包括晶界和析出物.因此，重要的是要检查每个微观结构组分的力学性能和变形行为，以开发具有上级力学性能的材料。然而，由于微观组织的尺寸在微米量级，因此，对每个微观组织成分的力学性能的测量和变形行为的观察是困难的。我们研制了一台试验机，可以测量微尺寸材料的力学性能和原位观察其变形行为。这台试验机配备了一台白光干涉仪，可以测量分辨率为0.1 nm的表面轮廓的微小尺寸的样品在其变形。从马氏体钢和Mg-Zn-Y合金的显微组织成分出发，测定了微合金化后的力学性能，观察了微合金化后的变形行为

The mechanical properties of materials are dominated by their microstructure, includinggrain boundaries, and precipitates. It is, therefore, important to examine the mechanicalproperties and deformation behavior of each microstructural constituent to develop materials with superior mechanical properties,. However , the measurement of mechanicalproperties and observation of the deformation behavior of each microstructural constituentare difficult because the size of microconstituents is on the order of microns. We have developed a testing machine that enables the measurement of mechanical properties andin-situ observation of deformation behavior of microsized materials. This testing machineis equipped with a white-light interferometer that can measure with a resolution of 0.1 nmthe surface profile of a microsized specimen during its deformation. We have measured themechanical properties and observed the deformation behavior of microsized specimensprepared from microstructural constituents of martensitic steel and Mg-Zn-Y alloy