添加钼（Mo）对采用放电等离子烧结技术制备的预合金化Ti6Al4V的相组成、微观结构及力学性能的影响

Effect of Molybdenum (Mo) Addition on Phase Composition, Microstructure, and Mechanical Properties of Pre-Alloyed Ti6Al4V Using Spark Plasma Sintering Technique.

作者信息

Rajadurai Murugesan, Muthuchamy Ayyapparaj, Annamalai A Raja, Agrawal Dinesh K, Jen Chun-Ping

机构信息

Department of Aeronautical Engineering, Mahendra Engineering College (Autonomous), Namakkal 637503, Tamil Nadu, India.

Department of Metallurgical and Materials Engineering, National Institute of Technology Tiruchirappalli, Tiruchirappalli 620015, Tamil Nadu, India.

出版信息

Molecules. 2021 May 13;26(10):2894. doi: 10.3390/molecules26102894.

DOI:10.3390/molecules26102894

PMID:34068199

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8153009/

Abstract

The effect of molybdenum additions on the phases, microstructures, and mechanical properties of pre-alloyed Ti6Al4V was studied through the spark plasma sintering technique. Ti6Al4V-xMo (where x = 0, 2, 4, 6 wt.% of Mo) alloys were developed, and the sintered compacts were characterized in terms of their phase composition, microstructure, and mechanical properties. The results show that the equiaxed primary alpha and Widmänstatten (alpha + beta) microstructure in pre-alloyed Ti6Al4V is transformed into a duplex and globular model with the increasing content of Mo from 0 to 6%. The changing pattern of the microstructure of the sample strongly influences the properties of the material. The solid solution hardening element such as Mo enhances mechanical properties such as yield strength, ultimate tensile strength, ductility, and hardness compared with the pre-alloyed Ti6Al4V alloy.

摘要

通过放电等离子烧结技术研究了添加钼对预合金化Ti6Al4V的相、微观结构和力学性能的影响。制备了Ti6Al4V-xMo（其中x = 0、2、4、6 wt.%的Mo）合金，并对烧结坯体的相组成、微观结构和力学性能进行了表征。结果表明，随着Mo含量从0%增加到6%，预合金化Ti6Al4V中的等轴初生α相和魏氏组织（α + β）微观结构转变为双相和球状组织。样品微观结构的变化模式强烈影响材料的性能。与预合金化Ti6Al4V合金相比，Mo等固溶强化元素提高了屈服强度、抗拉强度、延展性和硬度等力学性能。