高压扭转后WE43合金基复合材料的微观结构、显微硬度及耐腐蚀性

Microstructure, Microhardness and Corrosion Resistance of WE43 Alloy Based Composites after High-Pressure Torsion.

作者信息

Straumal Petr, Martynenko Natalia, Kilmametov Askar, Nekrasov Aleksey, Baretzky Brigitte

机构信息

A.A. Baikov Institute of Metallurgy and Materials Science RAS, 119334 Moscow, Russia.

Institute of new materials and nanotechnologies, National University of Science and Technology «MISiS», 119049 Moscow, Russia.

出版信息

Materials (Basel). 2019 Sep 15;12(18):2980. doi: 10.3390/ma12182980.

DOI:10.3390/ma12182980

PMID:31540140

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6766204/

Abstract

The structure and properties of a composite consisting of Mg-Y-Nd-Zr alloy (WE43) and various oxides are studied. The particles of the WE43 powder were coated by the nanocrystalline oxide layer by means of a wet chemical deposition process. After that the powder is compressed into solid samples and deformed using high-pressure torsion at room temperature. A second phase is present, both, in pure WE43 alloy and in the one with deposited oxides. We observed that the modification of the alloy by the oxide layer deposition and deformation by high-pressure torsion changes the phase composition and properties of the samples. The samples modified by TiO showed the best microhardness and corrosion resistance.

摘要

研究了由Mg-Y-Nd-Zr合金（WE43）和各种氧化物组成的复合材料的结构和性能。通过湿化学沉积工艺，在WE43粉末颗粒上包覆了纳米晶氧化层。之后，将粉末压缩成固体样品，并在室温下通过高压扭转进行变形。在纯WE43合金以及含有沉积氧化物的合金中均存在第二相。我们观察到，通过氧化层沉积和高压扭转变形对合金进行改性，会改变样品的相组成和性能。经TiO改性的样品表现出最佳的显微硬度和耐腐蚀性。