Effect of laser melting on the microstructure and microhardness of mechanically alloyed Cu-Cr-TiC composite

被引：0

作者：

Prosviryakov, A. S. ^{[1
]}

Bekarevich, D. A. ^{[1
]}

Pozdniakov, A. V. ^{[1
]}

Loginova, I. S. ^{[1
]}

Cheverikin, V. V. ^{[1
]}

Bazlov, A. I. ^{[1
]}

机构：

[1] Natl Univ Sci & Technol MISiS, Dept Phys Met Nonferrous Met, Leninskiy Prospect 4, Moscow 119049, Russia

来源：

MATERIALS LETTERS | 2025年 / 397卷

关键词：

Mechanical alloying; Metal matrix composites; Copper; Laser melting; Cu-Cr; Cu-Cr-TiC;

D O I：

10.1016/j.matlet.2025.138835

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work, a pulsed-periodic laser was used for single-tracks formation on Cu-40Cr-10TiC (wt%) composite obtained by mechanical alloying to study the effect of laser melting on its microstructure and microhardness. The mixture of starting components was ball milled for up to 10 h followed by hot pressing. It was shown that after mechanical alloying, composite particles with dispersed homogeneous microstructure and microhardness of 548 HV were formed. After laser melting, the microhardness decreases to 294 HV. Chromium crystallizes as large layered regions and spheroids with 0.5-8 mu m in size. Chromium carbide formation was also observed. The best structure was obtained at 260 W peak power.

引用

页数：5

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