Experimental Study on the Surface Densification of Fe-2Cu-0.6C Powder Metallurgy Material

被引：6

作者：

Liu, Xiao ^{[1
]}

Xiao, Zhi-Yu ^{[1
]}

Guan, Hang-Jian ^{[1
]}

Zhang, Wen ^{[1
]}

机构：

[1] South China Univ Technol, Natl Engn Res Ctr Near Net Shape Forming Metall M, Guangzhou 510640, Guangdong, Peoples R China

来源：

MATERIALS AND MANUFACTURING PROCESSES | 2016年 / 31卷 / 12期

基金：

中国国家自然科学基金;

关键词：

Densification; Force; Fracture; Metallurgy; Microhardness; Powder; Rolling; Strength; Surface; STEEL; GEARS;

D O I：

10.1080/10426914.2015.1117619

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The present work investigated the effects of rolling force (longitudinal feed) and spindle speed on surface performance of Fe-2Cu-0.6C powder metallurgy material. A newly self-designed rolling tool was used to densify the material's surface, and then the surface properties were measured. Results indicated that rolling force was the main effective parameter, and spindle speed was the secondary one. A densified depth and a surface hardness of 335 mu m and 320 HV0.1 were obtained by using a rolling force of 2800 N and a spindle speed of 360 r/min. The tensile strength was improved by 75%. The tensile fracture had mixed-rupture characteristics of dimples and tear ridge. In the surface layer, the ferrite was stretched and refined. The pearlite was deformed and oriented along the rolling direction. The lamellar spacing close to the surface was reduced. It played a significant role in enhancing the strength of material.

引用

页码：1621 / 1627

页数：7

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