THE SOFTENING BEHAVIOR OF HIGHER NIOUBIUM CONTENT X80 PIPELINE STEEL

被引：2
|
作者：
Miao, Chengliang [1 ]
Shang, Chengjia [1 ]
机构：
[1] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2009年 / 23卷 / 6-7期
关键词：
X80 pipeline steel; softening; recrystallizaiton; dragging; pinning; RECRYSTALLIZATION; KINETICS;
D O I：
10.1142/S0217979209061573
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In this paper, the softening behavior of higher Nb content X80 pipeline steel was investigated by means of the stress relaxation curve. Deformed above 1050 degrees C, the softening of the steel is fast and controlled by static recrystallization. Although the softening at 1000 degrees C is slower obviously, it was also controlled by static recrystallization, no more than the grain growth rate was declined because of the drag effect of solute Nb. Moreover, the pinning effect of precipitation is more effective to retarding the softening at relatively lower temperature and that can be revealed by the softening curve too.
引用
收藏
页码：1751 / 1757
页数：7
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