Influence of Titanium Diboride Particle Size on Structure and Mechanical Properties of an Al-Mg Alloy

被引:15
作者
Khrustalyov, Anton P. [1 ]
Kozulin, Alexander A. [1 ]
Zhukov, Ilya A. [1 ]
Khmeleva, Marina G. [1 ]
Vorozhtsov, Alexander B. [1 ]
Eskin, Dmitry [1 ,2 ]
Chankitmunkong, Suwaree [2 ,3 ]
Platov, Vladimir V. [1 ]
Vasilyev, Sergey V. [4 ]
机构
[1] Natl Res Tomsk State Univ, Fac Phys & Engn, Tomsk 634050, Russia
[2] Brunel Univ London, Brunel Ctr Adv Solidificat Technol, Uxbridge UB8 3PH, Middx, England
[3] King Mongkuts Univ Technol Thonburi, Dept Prod Engn, Bangkok 10140, Thailand
[4] Joint Stock Co Sci Prod Concern Mech Engn, Moscow 125212, Russia
基金
英国工程与自然科学研究理事会; 俄罗斯科学基金会;
关键词
aluminum alloy; titanium diboride; master alloy; structure; mechanical properties; COMPOSITE MASTER ALLOYS; ALUMINUM; STRENGTH; MICROSTRUCTURE; REFINEMENT; SCANDIUM; BEHAVIOR;
D O I
10.3390/met9101030
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In the present study, aluminum alloys of the Al-Mg system with titanium diboride particles of different size distribution were obtained. The introduction of particles in the alloy was carried out using master alloys obtained through self-propagating high-temperature synthesis (SHS) process. The master alloys consisted of the intermetallic matrix Al-Ti with distributed TiB2 particles. The master alloys with TiB2 particles of different size distribution were introduced in the melt with simultaneous ultrasonic treatment, which allowed the grain refining of the aluminum alloy during subsequent solidification. It was found that the introduction of micro- and nanoparticles TiB2 increased the yield strength, tensile strength, and plasticity of as-cast aluminum alloys. After pass rolling the castings and subsequent annealing, the effect of the presence of particles on the increase of strength properties is much less felt, as compared with the initial alloy. The recrystallization of the structure after pass rolling and annealing was the major contributor to hardening that minimized the effect of dispersion hardening due to the low content of nanosized titanium diboride.
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页数:14
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