Table 1: Steady state creep rates in friction stirred zone and base metal (load: 5 kg).

Temperature (°C)Steady state creep rate (min−1)
Base metal regionFriction stirred region

303 × 10−58.33 × 10−6
10030.4 × 10−58.7 × 10−5
150200 × 10−590 × 10−5
180235.7 × 10−5178.9 × 10−5