A Newly Developed Easily Sinterable Low-Alloy Steel Powder

Materials

卷:14

Izabela Kalemba-Rec¹  Dorota Tyrala¹  Janusz Konstanty¹ 

[1] Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, 30 Mickiewicz Avenue, 30-059 Krakow, Poland;

关键词: sintered diamond tools;    good sinterability;    low-alloy steel powder;   

DOI  :  10.3390/ma14020406

来源: DOAJ

【 摘 要 】

The work presents a possibility of fabrication of inexpensive iron-based powders intended to form the matrix in sintered diamond-impregnated tool components. In this study, a finely dispersed, pre-alloyed steel powder, containing over 95 wt.% Fe, has been designed and fabricated by means of a proprietary process developed at AGH-University of Science & Technology. It has been shown that the experimental powder can be consolidated to a closed porosity condition (>95% theoretical density) by pressure-less sintering at a temperature below 900 °C. The as-consolidated material is characterized by an excellent combination of hardness (~250 HV) and mechanical strength (>1200 MPa in 3-point bending) that meets the diamond tooling requirements. Its properties can be modified to some extent by varying the cold forming pressure and sintering temperature.

【 授权许可】

Unknown