Optimization of Al-Cu Cast Alloy Composition for Hydraulic Valves

• Autorzy: Li Rong , Chen Lunjun , Zeng Qi , Su Ming , Xie Zhiping

Identyfikatory

DOI

10.24425/afe.2020.131288

• Języki publikacji: EN

Abstrakty

EN

In order to identify the influence of different Mn, Cd, V and Zr content on the properties of Al-Cu casting alloys in hydraulic valves, orthogonal test methods were used to prepare alloy test bars with different elements and contents. Tensile tests were performed on the test bars so obtained. The microstructure of alloys with different compositions is studied. The results show that adding approximately 0.4% of Mn can not only form a strengthening phase but also reduce the excessive segregation of the matrix along the grain boundary. A Cd content of 0.2% can promote the formation of micro Cd spheres in the softer aluminum matrix. Hard spots increase the wear resistance of the material; however, an excess of Cd will cause element segregation and deteriorate the mechanical properties of the valve body. Zr and V refine the grains in the alloy; however, an excess of these elements will lead to a large area of segregation. If proper heat treatment is lacking, the mechanical properties of the valve body deteriorate.

Słowa kluczowe

EN

Al-Cu alloy; optimization; strengthening mechanisms; hydraulic multi-way valve

PL

stop Al-Cu; optymalizacja; mechanizm wzmacniający; zawór hydrauliczny

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2020
• Tom: Vol. 20, iss. 1
• Strony: 84--94
• Opis fizyczny: Bibliogr. 12 poz., fot., rys., tab., wykr.

Twórcy

autor

Li Rong

• Guizhou Normal University, School of Mechanical & Electrical Engineering, Guiyang, Guizhou, China

autor

Chen Lunjun

• Guizhou University, Guiyang, Guizhou, China

autor

Zeng Qi

• Guiyang Huaheng Mechanical Manufacture CO.LTD, Guiyang, Guizhou, China

autor

Su Ming

• Guizhou Normal University, School of Mechanical & Electrical Engineering, Guiyang, Guizhou, China

autor

Xie Zhiping

• Guizhou Normal University, School of Mechanical & Electrical Engineering, Guiyang, Guizhou, China

Bibliografia

• [1] Wang, S.R., Liu, Y.L., Zhu, Y.H., Guo, P.Y. & Wang, M. (2014). Mechanical Properties and Microstructure of Gray Graphite Cast Iron for Cartridge Valve. Machine Tool & Hydraulics. 42, 31-34.
• [2] Liu, J.K, Ma, B., Guan, W.J. & Xie, S.Y. (2016). Study on Characteristics of Leakage of Electronic-hydraulic Proportional Multiway Valve. Machine Tool & Hydraulics. 44, 120-124.
• [3] Wang, G., Ren, K., Hu, Y.S., Ye, M., Wang, S.Q. & Rong, Y.M. (2018). Microstructural Characteristics-based Mechanical Behavior of Aerospace Al-Cu Alloys. Journal of Mechanical Engineering. 54, 77-85.
• [4] Sun, T.F., Wu, Y.Y., Xu, J.J., Guan, B.P., Cao, G.R., Zhou, Q.H. & Gao, Z.Q. (2017). Metal mold gravity casting of high strength Al⁃Cu alloy. Ordnance Material Science and Engineering. 40, 35-38.
• [5] Zhang, X.G., Ma, Y.T., Gui, Z.Y. & Jin, J. (2008). Effect of Zr on Microstructure and Mechanical Properties of 7050 Aluminum Alloy. Materials for Mechanical Engineering. 32, 69-71+75.
• [6] Li, Y.Y., Guo, G.W., Zhang, W.W. & Luo, Z.Q. (2002). Effects of Zr and V on Mechanical Properties of Al-Cu Alloy. Special Cast and Nonferrous Alloys. 3, 4-6+3.
• [7] Gong, L.Q. (1987). Metallographic map of cast aluminum alloy. Changsha: Central South University of Technology Press, 1987.09:41
• [8] Sun, Y.Z., Cao, G. Zhang, G.Q. & Li, C.S. (2000). Cd Strongthening of High Strength Al Alloy. China Foundry Machinery & Technology. 6, 20-23.
• [9] Mondolfo, L.F. (1976). Aluminum alloys: Structure and Properties.
• [10] Yang, L.Q., Xu, J., Liu, G.J. & Fan, Z. (2012). Microstructural Features of Semi-Solid A357 Alloy Slurry under High-Shear Melt Processing. Foundry. 61, 143-146.
• [11] Lu, S.S, et al. (1986). Nonferrous casting alloys and smelting. Beijing: National Defense Press.
• [12] Yuan, F.Q., Zhang, J. & Fang, C. (2012). Effects of Rare Earth Addition on Grain Refinement of Magnesium Alloy. Hot Working Technology. 41, 30-33+37.

Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).