Method for manufacturing riveted joint, riveted joint, and vehicle component

A method for manufacturing a riveted joint, comprising:

• causing a shaft portion of a steel rivet having the shaft portion and a head portion to pass through through-holes of a plurality of overlaid sheet members;
• sandwiching the rivet between a pair of electrodes in an axial direction of the rivet;
• applying a force to the rivet and energizing the rivet with a pair of the electrodes to form a deformed portion at a distal end of the shaft portion;
• and
• cooling the rivet, wherein
• a Vickers hardness HB (HV) of the head portion of the rivet after cooling satisfies 130≤HB≤330, and
• in the rivet after cooling, a Vickers hardness HA (HV) of the deformed portion, a thickness TA (mm) of the deformed portion, a Vickers hardness HJ (HV) of a portion of the shaft portion at a center in the axial direction and at a center in a radial direction, a diameter DJ (mm) of the shaft portion, a Vickers hardness HB (HV) of the head portion, and a thickness TB (mm) of the head portion satisfy the following Equations 1 and 2:
• HJ
• ×
• DJ
• >
• ¯
• 4.7
• ×
• HB
• ×
• TB
• Equation
• ⁢
• 1
• HA
• ×
• TA
• >
• ¯
• 1.3
• ×
• HB
• ×
• TB
• .
• Equation
• ⁢
• 2