Evaluation of temperature and properties at interface of AISI 1040 steels joined by friction welding

Abstract

Purpose

The purpose of this paper is to evaluate temperature and properties at interface of AISI 1040 steels joined by friction welding.

Design/methodology/approach

In this study, AISI 1040 medium carbon steel was used in the experiments. Firstly, optimum parameters of the friction welding were obtained by using a statistical analysis. Later, the microstructures of the heat‐affected zone are presented along with micro hardness profiles for the joints. Then, the temperature distributions are experimentally obtained in the interface of the joints that is formed during the friction welding of 1040 steels with the same geometry. This study was carried out by using thermocouples at different locations of the joint‐interface. The results obtained were compared with previous studies and some comments were made about them.

Findings

It was discovered that temperature had a substantial effect on the mechanical and metallurgical properties of the material.

Research limitations/implications

The maximum temperature in the joint during frictional heating depends not only on the pressure, but also on the temperature gradient which depends on the rotational speed in particular. It is important to note that the measurement process was successfully accomplished in this study although it was particularly difficult to obtain temperature due to the large deformations at the interface. Future work could be concentrated on the temperature measurement of the joined materials.

Practical implications

Temperature is one of the most important of all physical quantities in industry. Its measurement plays a key part in industrial quality and process control, in the efficient use of energy and other resources, in condition monitoring and in health and safety. This paper contributes to the literature about temperature measurement in welded, brazed and soldered materials.

Originality/value

The main value of this paper is to contribute and fulfill the influence of the interface temperature on properties in welding of various materials that is being studied so far in the literature.

Citation

Kuscu, H., Becenen, I. and Sahin, M. (2008), "Evaluation of temperature and properties at interface of AISI 1040 steels joined by friction welding", Assembly Automation, Vol. 28 No. 4, pp. 308-316. https://doi.org/10.1108/01445150810904468