Low sliding-wear resistance of ultrafine-grained Al alloys and steel having undergone severe plastic deformation

被引：33

作者：

Kim, Yong-Suk ^{[1
]}

Yu, Hyun Seok ^{[1
]}

Shin, Dong Hyuk ^{[2
]}

机构：

[1] Kookmin Univ, Sch Adv Mat Engn, Seoul 136702, South Korea

[2] Hanyang Univ, Dept Met & Mat Sci, Ansan, South Korea

来源：

INTERNATIONAL JOURNAL OF MATERIALS RESEARCH | 2009年 / 100卷 / 06期

关键词：

Sliding-wear resistance; Ultrafine-grained; Strain hardening; Non-equilibrium grain boundaries; Interface cracking; NANOCRYSTALLINE SURFACE-LAYER; MAGNESIUM ALLOYS; DUCTILITY; BEHAVIORS; STRENGTH; FRICTION;

D O I：

10.3139/146.110109

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Dry sliding wear characteristics of ultrafine-grained Al alloys 1100, 5052, and low carbon ferrite-martensite dual phase steel (Fe-0.15C-0.25Si-1.11 Mn-0.06V) were investigated. The Al alloys and the steel were processed by the accumulative roll bonding and the equal channel angular pressing, respectively, to produce the ultrafine-grained microstructure. Pin-on-disk wear tests were performed on the alloys at various applied loads at room temperature. Hardness and strength of the ultrafine-grained alloys increased with the increase in the accumulated total plastic strain. However, wear resistance of the ultrafine-grained alloys was not improved after the severe deformation. The low wear-resistance of the ultrafine-grained alloys was attributed to the lack of strain hardening due to unstable and non-equilibrium grain boundaries of the alloys and the cracking at the interface of the ferrite and martensite phases.

引用

页码：871 / 874

页数：4

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