GRAIN REFINEMENT AND MICROSTRUCTURE EVOLUTION IN ALUMINUM A2618 ALLOY BY HIGH-PRESSURE TORSION

被引：0

作者：

Mohamed, Intan Fadhlina ^{[1
,3
,4
]}

Lee, Seungwon ^{[3
,4
]}

Edalati, Kaveh ^{[3
,4
]}

Horita, Zenji ^{[3
,4
]}

Abdullah, Shahrum ^{[1
,2
]}

Omar, Mohd Zaidi ^{[1
,2
]}

Zamri, Wan Fathul Hakim Wan ^{[1
,2
]}

机构：

[1] Univ Kebangsaan Malaysia, Fac Engn & Built Environm, Ukm Bangi 43600, Selangor, Malaysia

[2] Univ Kebangsaan Malaysia, Ctr Automot Res, Fac Engn & Built Environm, Ukm Bangi 43600, Selangor Darul, Malaysia

[3] Kyushu Univ, Dept Mat Sci & Engn, Fac Engn, Fukuoka 8190395, Japan

[4] Kyushu Univ, WPI, I2CNER, Fukuoka 8190395, Japan

来源：

JURNAL TEKNOLOGI | 2016年 / 78卷 / 6-9期

基金：

日本科学技术振兴机构;

关键词：

Severe plastic deformation; high-pressure torsion; grain refinement; Al alloy;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This work presents a study related to the grain refinement of an aluminum A2618 alloy achieved by High-Pressure Torsion (HPT) known as a process of Severe Plastic Deformation (SPD). The HPT is conducted on disks of the alloy under an applied pressure of 6 GPa for 1 and 5 turns with a rotation speed of 1 rpm at room temperature. The HPT processing leads to microstructural refinement with an average grain size of similar to 250 nm at a saturation level after 5 turns. Gradual increases in hardness are observed from the beginning of straining up to a saturation level. This study thus suggests that hardening due to grain refinement is attained by the HPT processing of the A2618 alloy at room temperature.

引用

页码：149 / 152

页数：4

共 30 条

[1]

ASM International Handbook Committee Metals Handbook, 1979, METALS HDB, P81

[2] Effects of high shearing stress combined with high hydrostatic pressure [J].