Forming Features and Properties of Titanium Alloy Billets After Radial-Shear Rolling

Abstract

Radial-shear rolling (RSR) of titanium alloy billets was realized in a three-high rolling mill. Experimental rolling was simulated using DEFORM software. The purpose was to reveal how stress-strain state parameters, grain structure and hardness vary along the billet’s radius in the stationary stage of the RSR process. It was also the goal to establish a relation between stress state parameters, hardness and grain structure. Changes in the accumulated strain and the stress triaxiality were established by computer simulation. Hardness and grain size changes were obtained after experimental rolling. The novelty aspect is that both computer simulation and experimental rolling showed that there is a ring-shape area with lowered strength in the billet’s cross-section. The radius of the ring-shape area was predicted as a result of the research.

Microstructure evolution and property analysis of commercial pure Al alloy processed by radial-shear rolling

“…The successful combination of RSR and rotary forging to improve the properties of a medical titanium alloy was shown by authors in [5]. The microstructure formation features of titanium and aluminum alloys rods after RSR were shown in [6,7]. Naizabekov et al [8] proposed a quality evaluation model of microstructure at RSP based on AISI 321 steel.…”

Increasing Low-Temperature Toughness of 09Mn2Si Steel through Lamellar Structuring by Helical Rolling

“…The formation of such a hierarchical microstructure, including the lamellar one, can be achieved using the radial-shear rolling procedure. The results of studies of the strain mechanisms for various materials subjected to this processing have been widely published recently [25][26][27][28][29]. In all these papers, the importance of the lamellar microstructure formation in the conditions of multilevel structuring is noted for increasing strength and maintaining toughness of rolled bars.…”

Increasing Fatigue Life of 09Mn2Si Steel by Helical Rolling: Theoretical–Experimental Study on Governing Role of Grain Boundaries

“…The possibility of a significant increase in microhardness by such processing has been shown. The results of using the “radial shear rolling” method for processing titanium rods have been presented in [ 23 ]. The relationships between the stress–strain state parameters, hardness, and grain sizes have been assessed by numerical experiments.…”