The effect of impact compaction on surface quality of powder discs

被引：1

作者：

Jonsen, P. ^{[1
]}

Haggblad, H. ^{[1
]}

Nishida, M. ^{[2
]}

机构：

[1] Lulea Univ Technol, S-97187 Lulea, Sweden

[2] Nagoya Inst Technol, Nagoya, Aichi, Japan

来源：

DYMAT 2009: 9TH INTERNATIONAL CONFERENCE ON THE MECHANICAL AND PHYSICAL BEHAVIOUR OF MATERIALS UNDER DYNAMIC LOADING, VOL 2 | 2009年

关键词：

D O I：

10.1051/dymat/2009155

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Powder compaction by impact where high strain-rates occurs in the powder is attending an increasing interest. Impact compaction or high velocity compaction (HVC) is a production technique with capacity to significantly improve the mechanical properties of powder metallurgy (PM) parts. The HVC experiments were performed using a laboratory machine with a hydraulically driven hammer. This machine has maximum impact energy of 4 kJ. The powder materials used for the investigation were pre-alloyed water atomized iron based powders. Profile measurements of HVC and conventionally compacted (CC) 25 mm circular discs have been performed with a Wyko NT1100 using vertical scanning interferometry (VSI). For comparable densities the HVC discs have a significantly flatter and smoother upper surface (impact face) compared to CC discs.

引用

页码：1109 / +

页数：3

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