The Effect of Chromium and Zirconium Alloying on the Structure and Properties of Submicrocrystalline Copper Alloys Obtained by Dynamic Channel-Angular Pressing

被引：0

作者：

Khomskaya, I. V. ^{[1
]}

Zel'dovich, V. I. ^{[1
]}

Abdullina, D. N. ^{[1
]}

Shorokhov, E. V. ^{[2
]}

机构：

[1] Russian Acad Sci, Mikheev Inst Met Phys, Ural Branch, Ekaterinburg 620108, Russia

[2] Zababakhin All Russian Res Inst Tech Phys, Russian Fed Nucl Ctr, Snezhinsk 456770, Russia

来源：

PHYSICS OF METALS AND METALLOGRAPHY | 2024年 / 125卷 / 10期

关键词：

copper alloys; submicrocrystalline structure; high-rate deformation; decomposition of alpha solid solution; thermal stability; electrical conductivity; STRAIN-RATE DEFORMATION; HIGH-PRESSURE TORSION; ZR ALLOY; WEAR-RESISTANCE; HIGH-STRENGTH; CU-ZR; CONDUCTIVITY; EVOLUTION; BRONZE;

D O I：

10.1134/S0031918X24601434

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The paper investigates the evolution of the structure and properties of low-alloy dispersion-hardening alloys based on the Cu-Zr, Cu-Cr, and Cu-Cr-Zr systems under high-rate deformation (similar to 10(5) s(-1)) by dynamic channel angular pressing (DCAP) and subsequent annealing (aging) at 200-700 degrees C. The effect of alloying with the microadditives Cr (0.09-0.22%) and Zr (0.04-0.20%) in achieving high hardness of copper with a submicrocrystalline structure obtained by DCAP is studied. The effect of DCAP and subsequent aging on the electrical conductivity of alloys is studied. The sequence of decomposition processes of a copper-based alpha solid solution with the precipitation of nanoscale particles of the second phases and recrystallization is determined. It is shown that the role of zirconium is due to the precipitation of Cu5Zr phase nanoparticles during DCAP and subsequent annealing on dislocations and subboundaries, their fixation, and reduced mobility, as a result, the process of formation of recrystallization centers slows down, which requires rearrangment (restructuring) of the dislocation structure.

引用

页码：1156 / 1165

页数：10

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