Effect of friction welding parameters on mechanical and metallurgical properties of ferritic stainless steel

Authors: Sathiya, P.; Aravindan, S.; Noorul Haq, A.

Source: The International Journal of Advanced Manufacturing Technology, Volume 31, Numbers 11-12, February 2007 , pp. 1076-1082(7)

Publisher: Springer

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Abstract:

Friction welding is one of the most economical and highly productive methods in joining similar and dissimilar metals. It is widely used in the automotive and aerospace industrial applications. Ferritic stainless steel (AISI430) is normally difficult to weld by fusion methods, due to the associated problems such as grain growth and retained austenite content. Such problems can be alleviated by the friction joining process. The present study utilized a continuous drive friction welding machine to join cylindrical specimens of ferritic stainless steel of similar composition and shape (equal diameter and length). The processing parameters such as friction pressure, friction time, upsetting pressure and upsetting time were changed in order to understand the role of parameters on the strength related aspects of friction processed joints. The joints were subjected to mechanical testing methods such as the uni-axial tension test, and charpy `v' notch impact tests. The micro hardness variation across the joint zone was determined. Micro structural studies were also carried out. The characteristics such as tensile strength, toughness and microstructural aspects exhibited by friction processed joints were compared to parent materials.

Keywords: Friction welding; Ferritic stainless steel; Tensile and impact strength; Hardness; Microstructures

Document Type: Research article

DOI: http://dx.doi.org/10.1007/s00170-005-0285-5

Affiliations: 1: Email: aravindan_nitt@yahoo.co.uk

Publication date: 2007-02-01