| 摘要 |
PROBLEM TO BE SOLVED: To provide a friction stir forming method which can form a material in a short time without melting it and without needing a skill. SOLUTION: The friction stir forming method includes abutting a stirring means 2 for generating friction heat on a first object 6 and penetrating it into the first object, in a state that the first object and a second object 5 are contacted with each other, to generate friction heat between the first object and the stirring means, and causing a plastic flow of a non-melting state in the material composing the first object by stirring in a heated state; and transcripting a unevenness formed on the second object onto it by taking advantage of the plastic flow state. Thereby, the method makes it possible to form a metal material easily in a short time without melting it and without needing a skill, though conventionally only a method of melting the first object and pouring it into the second object, or a method of shaving by machining has been able to be employed.
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