EFFECT OF DIE WALL LUBRICATION ON HIGH VELOCITY COMPACTION BEHAVIOR AND SINTERING PROPERTIES OF Fe-BASED PM ALLOY

被引：3

作者：

Liu, Zili ^{[1
,2
]}

Li, Dong ^{[1
]}

Liu, Xiqin ^{[1
,2
]}

Li, Haohao ^{[1
]}

Huang, Xin ^{[1
]}

Tang, Zhihao ^{[1
]}

Zou, Yuwen ^{[2
,3
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Peoples R China

[2] Jiangsu Automobile Powder Met Engn Technol Res Ct, Changshu 215534, Jiangsu, Peoples R China

[3] Changshu Huade Powder Met CO LTD, Changshu 215534, Jiangsu, Peoples R China

来源：

ARCHIVES OF METALLURGY AND MATERIALS | 2020年 / 65卷 / 02期

基金：

中国博士后科学基金;

关键词：

High velocity compaction; die wall lubrication; green density; impact force; cold welding; MECHANICAL-PROPERTIES; MICROSTRUCTURE;

D O I：

10.24425/amm.2020.132806

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Fe-based PM alloy powder of Fe-2.5Ni-0.5Mo-2Cu-0.4C was pressed by high velocity compaction combined with die wall lubrication, and the effect of die wall lubrication on high velocity compaction behavior and sintering properties of the Fe-based PM alloy were studied. The results indicate that the impact force, green density, sintered density of samples increase with the augment of the impact velocity and die wall lubrication. Compared with that without die wall lubrication, the green density and sintered density of the sample with die wall lubrication are about 0.07-0.12 g/cm(3) and 0.08 similar to 0.11 g/cm(3) higher at the same impact velocity, respectively, while the ejection force of the die wall lubricated sample is much smaller, and reduced about 26%similar to 36%. The green compact with die wall lubrication has much fewer porosity than that without die wall lubrication, and more mechanical bonding and cold welding regions are observed. The sintered samples mainly consists of gray pearlite and white ferrite, and more pearlite is observed in the sintered sample with die wall lubrication.

引用

页码：677 / 684

页数：8

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