Effect of 0.20% Beryllium (Be)-Added CuAl 10 Ni 5 Fe 4 Alloy on Tribological Behavior and Microstructural Properties After Post-Casting Heat Treatment and Forging Process.

Autor: Babay, Khaled A. A., Esen, Ismail, Sagiroglu, Selami, Ahlatci, Hayrettin, Keskin, Esma
Zdroj: Materials (1996-1944); Dec2024, Vol. 17 Issue 23, p5757, 21p
Abstrakt: This study explored how post-casting heat treatment and forging affected the tribological and microstructural characteristics of 0.20% beryllium (Be)-added CuAl10Ni5Fe4 alloys. The heat-treated CuAl10Ni5Fe4 microstructure exhibits a copper-rich α (alpha)-solid-solution phase, a martensitic β (beta)-phase, and diverse intermetallic κ (kappa)-phases, such as leaf-shaped κI, thin κIII, and black globs. Adding 0.20% beryllium to CuAl10Ni5Fe4 alloys enhanced the dendritic arm thickness, needle-like shape, and κ-phase quantities. Significant κIV- and κII-phase precipitation was observed in the tempered β-phase. Beryllium improves the aluminum matrix's microstructure. Forging greatly reduced the microstructural thickness of CuAl10Ni5Fe4 and CuAl10Ni5Fe4-0.20% Be alloys. The forging process also developed new κIV-phases. Wear resistance and hardness improved with beryllium. The CuAl10Ni5Fe4-0.20% Be alloy had the highest hardness values (235.29 and 255.08 HB) after solution treatment (ST) and tempering (T) after casting and forging (F). The CuAl10Ni5Fe4-0.20% alloy with Be added had the best wear after solution treatment, tempering, and forging. The CuAl10Ni5Fe4-0.20% Be alloy demonstrated a 0.00272 g weight loss, a 1.36 × 10−8 g/N*m wear rate, and a 0.059 friction coefficient at 10,000 m after forging (F). [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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