Premium
Einfluss des Aluminiumgehaltes und mechanischer Nanolegierungszeit auf die Präparation von Titan‐Aluminium‐Verbundwerkstoffbeschichtungen auf Magnesium‐Lithiumlegierungen
Author(s) -
Li Y.,
Sun J.,
Zhu X.C.,
Mei L.Y.,
Lei Y.Y.,
Du X.D.,
Wu Y.C.
Publication year - 2020
Publication title -
materialwissenschaft und werkstofftechnik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.285
H-Index - 38
eISSN - 1521-4052
pISSN - 0933-5137
DOI - 10.1002/mawe.201900168
Subject(s) - materials science , aluminium , titanium , coating , metallurgy , magnesium , composite number , microstructure , lithium (medication) , alloy , corrosion , conversion coating , titanium alloy , substrate (aquarium) , composite material , medicine , endocrinology , oceanography , geology
A titanium‐aluminum composite coating was successfully fabricated on magnesium‐lithium alloy substrate by mechanical nano‐alloying treatment (SMNAT). The effects of aluminum content and mechanical nano‐alloying time on the microstructure and properties of titanium‐aluminum composite coatings were investigated. The experimental results showed that the ratio of titanium‐aluminum powder has a significant effect on the preparation of the coating. Low aluminum content and high aluminum content in the mixture powder resulted in the formation of the coatings with inhomogeneous thickness. The titanium‐aluminum ratio of 3 : 1 was considered to be optimal for fabricating the coating with homogeneous thickness under the selected milling parameters. The hardness of top surface layer on titanium‐ aluminum coatings decreased from 292.0 HV 0.01 to 121.4 HV 0.01 with the increase of aluminum content. Additionally, the prolongation of treatment time facilitated to increase the thickness and density of the coatings, resulting to enhance their hardness and corrosion resistance.