The effects of melting technologies on the microstructures and properties of Nb-16Si-22Ti-2Al-2Hf-17Cr alloy

被引：40
作者：
Li, Xiaojian [1 ]
Chen, Haifeng [1 ]
Sha, Jiangbo [1 ]
Zhang, Hu [1 ]
机构：
[1] Beijing Univ Aeronaut & Astronaut, Dept Mat Sci & Engn, Beijing 100083, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2010年 / 527卷 / 23期
关键词：
Nb-Si based alloys; Induction melting; Induction skull melting; Microstructure; Mechanical property; Oxidation resistance; IN-SITU COMPOSITES; MECHANICAL-PROPERTIES; SILICIDE;
D O I：
10.1016/j.msea.2010.04.046
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
This paper deals with the effects of vacuum non-consumable arc-melting (VCAM), vacuum induction melting (VIM) and induction skull melting (ISM) technologies on microstructures, mechanical properties and oxidation resistance of Nb-16Si-22Ti-2Al-2Hf-17Cr alloy. It is revealed that the microstructure of the Nb-16Si-22Ti-2Al-2Hf-17Cr alloy is composed of Nb solid solution (Nb,Ti)(ss), silicide (Nb,Ti)(5)Si-3 and Laves phase NbCr2. The ISM ingots exhibit the finest microstructure, while the VCAM ingot shows the coarsest microstructure. Refined at 1800 degrees C for 10 min, the VIM ingot with a 0.1% carbon addition shows the best room temperature toughness of 9.05 MPa m(1/2) on average, however, the highest strength at 1250 degrees C was obtained on the ISM sample refined at technology parameters of 140 kw melting for 2 min + 160 kw melting for 3 min. In addition, oxidation resistance was greatly improved through the ISM technology compared with the VCAM technology. (C) 2010 Published by Elsevier B.V.
引用
收藏
页码：6140 / 6152
页数：13
相关论文
共 50 条
[21]   Elevated temperature compressive behavior of Nb-22Ti-16Si-7Cr-3Al-3Ta-2Hf alloy with minor Ho addition [J].
Tian, Y. X. ;
Guo, J. T. ;
Cheng, G. A. ;
Sheng, L. Y. ;
Zhou, L. Z. ;
He, L. L. ;
Ye, H. Q. .
INTERNATIONAL JOURNAL OF MATERIALS RESEARCH, 2008, 99 (02) :228-232
[22]   Oxidation behaviours of Nb-22Ti-15Si-2Al-2Hf-2V-(2,14)Cr alloys with Al and Y modified silicide coatings prepared by pack cementation [J].
Zhang, Songming ;
Shi, Xingrui ;
Sha, Jiangbo .
PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL, 2015, 25 (05) :486-495
[23]   The microstructural characteristics and mechanical properties of Nb-16Si-22Ti-2Al-2Cr alloys with Zr addition [J].
Li, Zhaobo ;
Luo, Liangshun ;
Wang, Binbin ;
Su, Baoxian ;
Wang, Liang ;
Su, Yanqing ;
Guo, Jingjie ;
Fu, Hengzhi .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2023, 880
[24]   Sintering behaviour of Nb-16Si-25Ti-8Hf-2Cr-2Al alloy powder fabricated by a hydrogenation-dehydrogenation method [J].
Park, Ki Beom ;
Choi, Jaeho ;
Lee, Sung Yong ;
Park, Jae-Young ;
Na, Tae-Wook ;
Choi, Jong-In ;
Kang, Jang-Won ;
Park, Hyung-Ki .
MATERIALS SCIENCE AND TECHNOLOGY, 2020, 36 (12) :1372-1380
[25]   Microstructures and tensile properties of Ti-45.5Al-2Nb-2Cr rolled sheets [J].
Seetharaman, V ;
Semiatin, SL .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2001, 299 (1-2) :195-209
[26]   The microstructure evolution of directionally solidified Nb-22Ti-14Si-4Cr-2Al-2Hf alloy during heat treatment [J].
Yuan Sainan ;
Jia Lina ;
Su Linfen ;
Ma Limin ;
Zhang Hu .
INTERMETALLICS, 2013, 38 :102-106
[27]   Microstructure evolution and room temperature deformation of a unidirectionally solidified Nb-22Ti-16Si-3Ta-2Hf-7Cr-3Al-0.2Ho (at.%) alloy [J].
Cheng, G. M. ;
He, L. L. .
INTERMETALLICS, 2011, 19 (02) :196-201
[28]   Microstructure evolution of eutectic Nb-24Ti-15Si-4Cr-2Al-2Hf alloy processed by directional solidification [J].
Li, Zhen ;
Yuan, Sai-Nan ;
Jia, Li-Na ;
Kong, Bin ;
Hong, Zhen ;
Zhang, Hu .
RARE METALS, 2017, 36 (06) :472-477
[29]   Effect of the Cr2Nb Phase on the Tensile Behavior and Oxidation Resistance of a Two-Step Heat-Treated Nb-24Ti-12Si-10Cr-2Al-2Hf Alloy [J].
Jia, L. N. ;
Zhang, H. .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2018, 49A (04) :1295-1303
[30]   Improving the mechanical properties of Nb-24Ti-16Si-2Al alloy by adding Zr and Fe to regulate silicide [J].
Wang, Qibin ;
Wang, Qi ;
Chen, Ruirun ;
Wang, Xiaowei ;
Su, Yanqing ;
Fu, Hengzhi .
MATERIALS CHARACTERIZATION, 2023, 196
12345