High-Throughput Characterization of Composition and Performance of Titanium Alloys Based on Nanoindentation Technology and EPMA

摘要

Traditional high-throughput experiments increase the test efficiency by designingcomponent gradient tests and other methods. This article intends to improve the traditional highthroughputexperiments and proposes an experimental scheme combining nanoindentationtechnology and electron probe microanalysis (EPMA). Based on a new Ti-Mo-Al-Zr-Cr-Sn alloy,micro-region composition and corresponding performance at multiple indentations are directlycharacterized, including a series of different alloy compositions composed of 8 elements such as Mo,Al and the corresponding hardness (H) and elastic modulus (E). Then the principal analysis methodin statistics, the theory of molybdenum equivalent and aluminum equivalent are used to process theobtained data, and a series of atlases such as "E-H-component characteristic parameters" and "E-Halloyequivalents" are constructed, which has achieved high-throughput characterization of therelationship between composition and performance of titanium alloy. Related work can not onlyquickly determine the alloy composition range corresponding to high E and high H values, but alsoprovide guidance for further optimization of titanium alloy composition design.