Abstract
The effect of adding nanocrystalline ZrO2 and submicron TiC to ultrafine Al2O3 on mechanical properties and the microstructure of the composites developed by hot pressing was investigated. It was shown that by means of hot pressing in an argon atmosphere at a sintering temperature of 1500 °C one can obtain the composites Al2O3 - ZrO2 - TiC with a fine structure and minimal porosity. It has been shown that in material a multi-scale hierarchical structure is formed, which possesses high physical and mechanical properties: the hardness and fracture toughness was 21.5 GPa and 5.2 MPa∗m1/2 respectively, the modulus of elasticity was 500 GPa and bending strength was 390 MPa. Tests on composites' cutting properties were carried out on interrupted cutting of hardened steel. All samples had wear of the cutting edge in the form of chips of the grain rear working surface of the tool, but the cutting tool which was made by Al2O3 - 10% ZrO2 - 10% TiC had a minimum width of wear.
| Original language | English |
|---|---|
| Article number | 012002 |
| Journal | IOP Conference Series: Materials Science and Engineering |
| Volume | 116 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 3 Mar 2016 |
| Event | International Conference on Advanced Materials and New Technologies in Modern Materials Science 2015, AMNT 2015 - Tomsk, Russian Federation Duration: 9 Nov 2015 → 11 Nov 2015 |
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ASJC Scopus subject areas
- Materials Science(all)
- Engineering(all)
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Microstructure, mechanical properties and machining performance of hot-pressed Al2O3 - ZrO2 - TiC composites. / Grigoriev, M.; Kotelnikov, N.; Buyakova, S.; Kulkov, S.
In: IOP Conference Series: Materials Science and Engineering, Vol. 116, No. 1, 012002, 03.03.2016.Research output: Contribution to journal › Conference article
}
TY - JOUR
T1 - Microstructure, mechanical properties and machining performance of hot-pressed Al2O3 - ZrO2 - TiC composites
AU - Grigoriev, M.
AU - Kotelnikov, N.
AU - Buyakova, S.
AU - Kulkov, S.
PY - 2016/3/3
Y1 - 2016/3/3
N2 - The effect of adding nanocrystalline ZrO2 and submicron TiC to ultrafine Al2O3 on mechanical properties and the microstructure of the composites developed by hot pressing was investigated. It was shown that by means of hot pressing in an argon atmosphere at a sintering temperature of 1500 °C one can obtain the composites Al2O3 - ZrO2 - TiC with a fine structure and minimal porosity. It has been shown that in material a multi-scale hierarchical structure is formed, which possesses high physical and mechanical properties: the hardness and fracture toughness was 21.5 GPa and 5.2 MPa∗m1/2 respectively, the modulus of elasticity was 500 GPa and bending strength was 390 MPa. Tests on composites' cutting properties were carried out on interrupted cutting of hardened steel. All samples had wear of the cutting edge in the form of chips of the grain rear working surface of the tool, but the cutting tool which was made by Al2O3 - 10% ZrO2 - 10% TiC had a minimum width of wear.
AB - The effect of adding nanocrystalline ZrO2 and submicron TiC to ultrafine Al2O3 on mechanical properties and the microstructure of the composites developed by hot pressing was investigated. It was shown that by means of hot pressing in an argon atmosphere at a sintering temperature of 1500 °C one can obtain the composites Al2O3 - ZrO2 - TiC with a fine structure and minimal porosity. It has been shown that in material a multi-scale hierarchical structure is formed, which possesses high physical and mechanical properties: the hardness and fracture toughness was 21.5 GPa and 5.2 MPa∗m1/2 respectively, the modulus of elasticity was 500 GPa and bending strength was 390 MPa. Tests on composites' cutting properties were carried out on interrupted cutting of hardened steel. All samples had wear of the cutting edge in the form of chips of the grain rear working surface of the tool, but the cutting tool which was made by Al2O3 - 10% ZrO2 - 10% TiC had a minimum width of wear.
UR - http://www.scopus.com/inward/record.url?scp=84971629582&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84971629582&partnerID=8YFLogxK
U2 - 10.1088/1757-899X/116/1/012002
DO - 10.1088/1757-899X/116/1/012002
M3 - Conference article
AN - SCOPUS:84971629582
VL - 116
JO - IOP Conference Series: Materials Science and Engineering
JF - IOP Conference Series: Materials Science and Engineering
SN - 1757-8981
IS - 1
M1 - 012002
ER -