View Full-text

pISSN : 1598-706X / eISSN : 2288-8381


한국주조공학회지 (37권4호 115-122)

Effect of Contact Load on Wear Property of (TiB+TiC) Particulates Reinforced Titanium Matrix Composites

(TiB+TiC) 입자강화 Ti기 복합재료의 접촉하중에 따른 내마모 특성

Bong-Jae Choi†

Department of Metallurgical & Materials Engieering, Inha Technical College



The aim of this research is to evaluate the wear properties of (TiB+TiC) paticulate reinforced titanium matrix composites (TMCs) by in-situ synthesis. Different particle sizes (1500, 150 μm) and contents (0.94, 1.88 and 3.76 mass% for Ti, 1.98 and 3.96 mass% for the Ti6Al4V alloy) of boron carbide were added to pure titanium and to a Ti6Al4V alloy matrix during vacuum induction melting to provide 5, 10 and 20 vol.% (TiB+TiC) particulate reinforcement amounts. The wear behavior of the (TiB+TiC) particulate reinforced TMCs is described in detail with regard to the coefficient of friction, the hardness, and the degree of reinforcement fragmentation during sliding wear. The worn surfaces of each sliding wear condition are shown for the three types of wear studied here: transfer layer wear, particle cohesion wear and the development of abrasive areas. The fine reinforcements of TMCs were easily fragmented from the Ti matrix as compared to coarse reinforcements, and fragmented debris accelerated the decrease in the wear resistance.


Titanium, Composites, Casting, Wear