Friction stir welding of a high carbon steel

Microstructures and Mechanical Properties of Friction Stir Welded 2.25Cr–1Mo Steel

“…4) Also FSW of high carbon steel which has 0.75 mass% C, martensite fraction is proportional to increasing of tool rotation speed. 15) In other words SZ has little martensite at lower tool rotation speed condition that at higher tool rotation speed. However, martensite is mainly microstructure in the SZs regardless of tool rotation speeds and carbon containing in this study, it suggests that this different microstructure is due to high hardenability of the 2.25Cr1Mo steel.…”

“…Cui et al 15) and Y. S. Sato et al 16) successfully produced friction stir welds in 0.7% C and 1.02% C steels using several welding parameters and characterized the stir zone (SZ) microstructure with a hardness profile. In these studies, friction stir welds were successfully produced using various welding parameters and the SZ microstructure was characterized with a hardness profile.…”

Friction stir welding of duplex and superduplex stainless steels and some aspects of microstructural characterization and mechanical performance

“…The lower axial force, combined with higher spindle speed and lower transverse speed, resulted in lower torque on the welded joint, in agreement with lower heat input ( Table 2). According to Equation 3, the heat input should increase with higher spindle speed and lower transverse speed 37,38 . However, it is necessary to consider the influence of torque, which is governed by the flow characteristics of the material and the spindle speed.…”

The Status of Friction Stir Welding Applications to Ferrous Materials

“…2.2.1 페라이트계 강 페라이트계 강에 대한 FSW 보고는 지금 까지 연강 8) , 각종 탄소강 [9][10][11][12][13][14] , DH36강 15) , C-Mn강 16,17) , 라인 파이 프용강 18,19) , 12%Cr강 20,21) , HSLA-65강 [22][23][24][25][26] , DP강 [27][28][29][30] , B첨가강 . 그러나 접합조건을 조절하여 냉 각속도 및 최고도달온도를 제어하면 FSW후 경화조직 의 형성을 억제할 수 있다 [10][11] .…”