A Study of Annealing Effects on the Joints of a Rotary Friction Welds of AISI 1030 Steel

This study is concerned with the post-heat treatment of rotational friction welds. AISI 1030 carbon steel parts are welded by rotational friction welding (RFW). The welding process parameters include friction pressure (P1), friction time (T1); Forging pressure (P2), forging time (T2). During the fri...

Full description

Saved in:
Bibliographic Details
Published in:Key engineering materials 2023-12, Vol.969, p.73-78
Main Authors: Khanh, Bui Duy, Qui, Dao Duy, Trung, Pham Quang
Format: Article
Language:English
Subjects:
Annealing
Bend strength
Bend tests
Carbon steels
Elongation
Forging
Friction welding
Grain size
Grain size distribution
Hardness
Heat treatment
Mechanical properties
Medium carbon steels
Phase distribution
Process parameters
Tensile strength
Tensile tests
Welded joints
Welding parameters
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This study is concerned with the post-heat treatment of rotational friction welds. AISI 1030 carbon steel parts are welded by rotational friction welding (RFW). The welding process parameters include friction pressure (P1), friction time (T1); Forging pressure (P2), forging time (T2). During the friction phase, the rotational speed is 1450 rpm; after that, the welding parts is stopped immediately and pressed together. The weld samples will be annealed at 650 °C for 4 hours. The change in the properties of the material of a RFW weld joint such as hardness, tensile strength, bending strength as well as grain size when undergone a heat treatment process was investigated. The obtained results show that the annealing process strongly changes the mechanical properties through altering the microstructure of the weld. Particularly, the weld hardness and tensile strength decrease significantly while the bending strength and elongation increase as a result of the increase in grain size and uniformity of the phase distribution. The annealed weld has a hardness reduction of nearly 20% and a tensile strength reduction of about 24% compared to the original weld. The elongation in the tensile test increases from 1.1% for weld specimens to 2.54% for post-heat-treated welds. In the bending test, the maximum load before the appearance of cracks on the specimen increased by about 42% when comparing the post-heat and original weld specimens.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/p-NB1vbs