| 摘要 |
PROBLEM TO BE SOLVED: To soften a high m.p. work over a wide range, to efficiently stir with action of a tool and to join both works in a good quality by executing friction-stirring-joining of both works while forming the temp. peak at the high m.p. work side from the abutting part position on both works having different kinds of metals. SOLUTION: The high m.p. work 6 of copper-made, etc., and the low m.p. work 7 of aluminum-made, etc., are made into butting state and the friction- stirring-joining is executed while shifting a rotary l of a tool for joining to the high m.p. work 6 side from the butting part position on both works 6, 7. The temp. peak during joining is formed at position at the high m.p. work 6 side from the butting part position on both works 6, 7. The temp. at the butting part 8 on the works 6, 7 is desirable to be about recrystallized temp. of the low m.p. work 7. The peak temp. is desirable to be the recrystallize temp. of the low m.p. work 6 or more to lower than the m.p. thereof. |
