Surface roughness investigation of ultrafine-grained aluminum alloy subjected to high speed erosion

被引：2
作者：
Kazarinov, N. [1 ,2 ]
Evsyifeev, A. [1 ]
Petrov, Y. [1 ,3 ]
Lashkov, V. [1 ]
Atroshenko, S. [3 ]
Valiev, R. [1 ]
机构：
[1] St Petersburg State Univ, St Petersburg 199034, Russia
[2] RAS, Lavrentyev Inst Hydrodynam, Siberian Branch, Novosibirsk 630590, Russia
[3] RAS, Inst Problems Mech Engn, St Petersburg 199178, Russia
来源：
21ST EUROPEAN CONFERENCE ON FRACTURE, (ECF21) | 2016年 / 2卷
关键词：
erosion; SPD; fracture analysis; surface roughness; HIGH-PRESSURE TORSION; MECHANICAL-PROPERTIES; COPPER; DEFORMATION; REFINEMENT; INITIATION; TI-6AL-4V;
D O I：
10.1016/j.prostr.2016.06.063
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
This work presents first attempts to study influence of severe plastic deformation (SPD) procedure on material surface performance in high speed erosion conditions. Ultrafine-grained Aluminum alloy samples (after high pressure torsion) and were subjected to intensive erosion by corundum particles together with their coarse-grained counterparts. Particles were 100 pm in diameter and were accelerated via air flow up to 40-200 m/s velocities in a special experimental setup. Surface roughness measurements were performed to compare surface properties of SPD-processed and original samples. Additionally, SPD processing appeared to increase noticeably threshold velocity of the surface fracture process. A structural analysis of fracture surfaces was carried out on the samples in initial state and after erosion with different intensities. Copyright (C) 2016 The Authors. Published by Elsevier B.V.
引用
收藏
页码：485 / 492
页数：8
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