Effect of long-term thermal exposure on the hot ductility behavior of GH3535 alloy
Han, FF; Zhou, BM; Huang, HF; Leng, B; Lu, YL; Li, ZJ; Zhou, XT; Li, ZJ (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Thorium Molten Salts Reactor Ctr, Beijing 100864, Peoples R China.
2016
发表期刊MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
卷号673页码:299-306
文章类型期刊论文
摘要The hot ductility behavior of Ni-16Mo-7Cr alloys (named GH3535) exposed at 700 degrees C for different durations has been investigated by means of tensile test. It was found that the alloy exhibited a constant low ductility within the first 10 h exposure, and then showed an increasing ductility with the exposure time until 1000 h. After that, the ductility of the alloy decreased gradually with the increasing exposure time up to 10000 h. Detailed microstructural investigations using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), electron backscatter diffraction (EBSD), and transmission electron microscopy (TEM) have shown that the change in the ductility of the alloy with the exposure time could be attributed to the precipitation of M12C carbide at the grain boundary. Such precipitates with size of 200 nm, which are formed during the thermal exposure within 1000 h, can significantly restrain the grain boundary sliding and crack initiation, resulting in the high ductility of the alloy. Further exposure will cause the coarsening of the carbides, making them as the source of grain boundary cracks, hence decreases the ductility of the alloy. (C) 2016 Elsevier B.V. All rights reserved.
关键词Gh3535 Alloy Hot Ductility Thermal Exposure Grain Boundary Sliding Carbides
DOI10.1016/j.msea.2016.07.034
收录类别SCI
语种英语
WOS记录号WOS:000382410000035
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/26486
专题中科院上海应用物理研究所2011-2018年
通讯作者Li, ZJ (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Thorium Molten Salts Reactor Ctr, Beijing 100864, Peoples R China.
推荐引用方式
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Han, FF,Zhou, BM,Huang, HF,et al. Effect of long-term thermal exposure on the hot ductility behavior of GH3535 alloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2016,673:299-306.
APA Han, FF.,Zhou, BM.,Huang, HF.,Leng, B.,Lu, YL.,...&Li, ZJ .(2016).Effect of long-term thermal exposure on the hot ductility behavior of GH3535 alloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,673,299-306.
MLA Han, FF,et al."Effect of long-term thermal exposure on the hot ductility behavior of GH3535 alloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 673(2016):299-306.
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