Frictionstirrivetin（gFSR）hasachievedremarkable success in the joining and processing of aluminum alloys and steels. In this paper

the classification and mechanism of FSR are summarized. The joint types

the microstructure transformation of joint area

the kinds and influence factors of interfacial inter-metallic compounds and the failure mode of the FSR for alu-minum alloy and steel were analyzed and summarized. A great deal of research indicated that based on the microstructure transformation

the joint area can be divided into anchoring zone

thermal-mechanical affected zone and heat affected zone.Due to the friction heating

mechanical reactions occurred at the joining interface

it is easy to generate intermetallic compounds FexAl（yx<y）

which is harmful to the comprehensive properties of the joints. However

the harmful intermetallic compounds can be reduced by addition of Zn element

galvanization or Zn-AlMg coating.