On the occurrence of dynamic strain aging in C-103 Nb based alloy

被引：25
|
作者：
Panwar, S. S. [1 ,3 ]
Prasad, Kartik [2 ]
Patro, T. Umasankar [3 ]
Balasubramanian, K. [3 ]
Venkataraman, B. [2 ]
机构：
[1] DRDL, Hyderabad, Andhra Pradesh, India
[2] DMRL, Hyderabad, Andhra Pradesh, India
[3] Def Inst Adv Technol DU, Pune, Maharashtra, India
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2015年 / 620卷
关键词：
C-103; alloy; Niobium; Dynamic strain aging; Serrations; Oxidation; COMMERCIALLY PURE NIOBIUM; MECHANICAL-PROPERTIES; OXYGEN; MICROSTRUCTURE;
D O I：
10.1016/j.msea.2014.10.016
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this study, the tensile properties of C-103 Nb based alloy were evaluated in the temperature range between room temperature (RT) and 1200 degrees C using Gleeble test system at the strain rate of 10(-2) s(-1). The presence of well-defined serrations and temperature insensitivity of 0.2% yield strength confirmed the occurrence of dynamic strain aging (DSA) from RT to 1200 degrees C. However, the DSA was found to have predominant effect only up to 900 degrees C, beyond which dynamic recovery and oxidation influenced the tensile properties. Fractography revealed that the alloy had undergone intergranular fracture, which was attributed to the DSA in the temperature range of 600-900 degrees C and oxidation in the temperature range of 1000-1200 degrees C. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：286 / 292
页数：7
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