Influence introducing various plasticizers into an initial charge on the structure and properties of iron-based powder materials alloyed with copper

IF 0.8 4区材料科学 Q4 METALLURGY & METALLURGICAL ENGINEERING

Metallurgist Pub Date : 2024-06-03 DOI:10.1007/s11015-024-01685-7

J. V. Eremeeva, Y. S. Ter-Vaganyants, O. V. Korznikov

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Abstract

In this paper the influence introducing various plasticizers into an initial charge on the structure and properties of iron-based powder materials alloyed with copper is considered. It is shown that introduction of copper stearate into an initial powder mixture and warm mixing, pressing and subsequent sintering makes it possible to obtain low-porosity workpieces with relative porosity of 95%. Pores within the workpieces obtained have a small size of 10–15 microns and a rounded shape. Also, bending strength is determined for sintered samples of all the compositions of powder mixtures studied and the Rockwell hardness is determined on the C scale. Powder steels based upon mixtures have the best set of mechanical properties

PZhRV 2.200.28 + 0.7 wt.% Br + 0.7 wt.% Cu + 1 wt. % StCu + warm mixing—hardness HRC 58. flexural strength 600 MPa
PZhRV 2.200.28 + 1.4 wt.% Br + 1.4 wt.% Cu + 1.4 wt.% C + 1.0 wt.% StFe + warm mixing—hardness HRC 100, flexural strength 530 MPa

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在初始装料中引入各种增塑剂对铜合金铁基粉末材料的结构和性能的影响

本文研究了在初始装料中引入各种增塑剂对铜合金铁基粉末材料的结构和性能的影响。研究表明，在初始粉末混合物中引入硬脂酸铜，然后进行热混合、压制和随后的烧结，可以获得相对孔隙率为 95% 的低孔隙率工件。获得的工件内的孔隙小至 10-15 微米，形状呈圆形。此外，还测定了所研究的所有粉末混合物成分的烧结样品的抗弯强度，并按 C 级测定了洛氏硬度。基于混合物的粉末钢具有最佳的机械性能PZhRV 2.200.28 + 0.7 wt.% Br + 0.7 wt.% Cu + 1 wt.抗折强度 600 MPaPZhRV 2.200.28 + 1.4 wt.% Br + 1.4 wt.% Cu + 1.4 wt.% C + 1.0 wt.% StFe + 热混合硬度 HRC 100，抗折强度 530 MPa

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来源期刊

Metallurgist 工程技术-冶金工程

CiteScore

1.50

自引率

44.40%

发文量

151

审稿时长

4-8 weeks

期刊介绍： Metallurgist is the leading Russian journal in metallurgy. Publication started in 1956. Basic topics covered include: State of the art and development of enterprises in ferrous and nonferrous metallurgy and mining; Metallurgy of ferrous, nonferrous, rare, and precious metals; Metallurgical equipment; Automation and control; Protection of labor; Protection of the environment; Resources and energy saving; Quality and certification; History of metallurgy; Inventions (patents).