Kinetics of Post-dynamic Coarsening and Reverse Transformation in Ti-6Al-4V

被引：7

作者：

Guo, Baoqi ^{[1
]}

Fall, Ameth ^{[2
]}

Jahazi, Mohammad ^{[2
]}

Jonas, John J. ^{[1
]}

机构：

[1] McGill Univ, Mat Engn, 3610 Univ St, Montreal, PQ H3A 0C5, Canada

[2] Ecole Technol Super, Dept Mech Engn, 1100 Rue Notre Dame Ouest, Montreal, PQ H3C 1K3, Canada

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2018年 / 49A卷 / 12期

关键词：

SUPERPLASTIC DEFORMATION; PHASE-TRANSFORMATION; VOLUME FRACTION; TITANIUM-ALLOY; MICROSTRUCTURE EVOLUTION; ISOTHERMAL CONDITIONS; HOT DEFORMATION; FLOW BEHAVIOR; AL-ALLOY; PRECIPITATION;

D O I：

10.1007/s11661-018-4952-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Experiments were carried out on the post-dynamic coarsening of alpha and reverse transformation of Ti-6Al-4V. The post-dynamic coarsening followed r(n)vs time kinetics and the n=3 best fit indicated that it was controlled by bulk diffusion, i.e., by vanadium diffusion through the beta matrix. Its rate was one order of magnitude faster than that applicable to static coarsening. The reverse transformation was characterized using a compression dilatometer and occurred in two stages; the first was transformation on dislocations; the second involved the growth of the alpha structure.

引用

页码：5956 / 5961

页数：6

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