Investigating the Effect of Soaking and Tempering Temperatures on High Vanadium Alloys for Grinding Media

Vanadium creates the hardest carbides and has a beneficial impact on wear characteristics [1,2]. However, due to price variations in minerals as a result of the current economic climate, vanadium is currently expensive and, despite its excellent characteristics, is rarely used in wear resistant materials. Nonetheless, it is critical to investigate the impact of vanadium carbides (VC) on wear parameters and then compare the cost/durability ratio to other industrial alloys now in use.

Through the influence of the orientation and shape of the eutectic carbide M7C3, vanadium has been employed as a secondary alloying element in high chromium cast iron (HCWCI) and has generated positive results [3,4]. The fact that VC is discontinuous [5,6] is advantageous in terms of impact attributes. Carbon (C) is required to boost the matrix’s strength because VC alone cannot maintain high macro-hardness values [7]. The hardness of the surface must be between 0.5 and 1.3 times that of the abrasive for enhanced wear characteristics. The impact of soaking and tempering temperatures on the hardness and wear parameters of a high vanadium alloy, 1.91C-0.82Mn-0.96Si-0.90Ni-1.35Cr-0.25Mo-6.12V, was examined in this article. The soaking temperatures were 1150 and 1250°C, with tempering temperatures ranging from 300 to 600°C in 100°C increments. It was discovered that soaking at 1250°C enhanced the quantity of residual austenite while also improving wear resistance in both the as-quenched and after tempering up to 500°C states.

Author (S) Details

Absalom D. Mabeba

University of Pretoria, Lynnwood Rd, Hatfield, Pretoria, 0002, South Africa. and Mintek, 200 Malibongwe Drive, Randburg 2125, South Africa.

Charles Siyasiya

University of Pretoria, Lynnwood Rd, Hatfield, Pretoria, 0002, South Africa.

Joseph Moema

University of Pretoria, Lynnwood Rd, Hatfield, Pretoria, 0002, South Africa. and Mintek, 200 Malibongwe Drive, Randburg 2125, South Africa.

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