Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 22    No. 4    April 2012

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Dynamic recrystallization of Ti−6Al−2Zr−1Mo−1V in β forging process
OUYANG De-lai1, 2, WANG Ke-lu1, CUI Xia1

1. School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang 330063, China;
2. School of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics,
Nanjing 210016, China

Abstract:The dynamic recrystallization (DRX) behavior of Ti−6Al−2Zr−1Mo−1V alloy was investigated at deformation temperature of 1000−1100 °C and strain rate of 10−3−1.0 s−1 by using compression test. The results show that discontinuous dynamic recrystallization (DDRX) is the predominant recrystallization mechanism at temperature higher than 1050 °C and strain rate lower than 0.01 s−1. Meanwhile, continuous dynamic recrystallization is the main mechanism observed at temperature below 1050 °C and strain rate above 0.01 s−1, mixed with a few DDRX grains. In addition, decreasing strain rate and increasing deformation temperature are found to facilitate the progress of DRX and refinement of grains in the Ti alloy in β forging process.

 

Key words: dynamic recrystallization; Ti−6Al−2Zr−1Mo−1V alloy; b forging process; compression test

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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