| 摘要 |
A method of converting an alloy comprising a majority of titanium, the method comprising:
a step of fabricating an ingot (1);steps of a first type (A, B, C) of plastically deforming the alloy at a temperature higher than the β transus temperature Tβ;steps of a second type (A′, B′) of plastically deforming the alloy at a temperature lower than the β transus temperature Tβ.;These step of the first and second types (A, A′, B, B′, C) are performed in the following sequence:
a first step of the first type (A) at a first temperature T1; a first step of the second type (A′);a second step of the first type (B) at a second temperature T2 lower than T1; a second step of the second type (B′); anda third step of the first type (C) at a third temperature T3 lower than T2. |
| 主权项 |
1. A method of converting an alloy that comprises, in percentage by weight of alloy, a majority of titanium, the alloy presenting a β transus temperature beyond which a transition is observed from α phase alloy structures to β phase alloy structures, the method comprising:
a step of fabricating an ingot (1) made of said alloy; at least first, second, and third steps of a first type (A, B, C) consisting in plastically deforming the alloy from said ingot while it is at a current temperature strictly higher than the β transus temperature (Tβ); and at least first and second steps of a second type (A′, B′) consisting in plastically deforming the alloy from said ingot while it is at a current temperature strictly lower than the β transus temperature (Tβ); the method being characterized in that the steps of the first and second types (A, A′, B, B′, C) are applied in the following sequence: performing the first step of the first type (A) while the alloy is at a first temperature (T1); followed by performing the first step of the second type (A′); followed by performing the second step of the first type (B) while the alloy is at a second temperature (T2) strictly lower than said first temperature (T1); followed by performing the second step of the second type (B′); followed by performing the third step of the first type (C) while the alloy is at a third temperature (T3) strictly lower than said second temperature (T2). |
