EFFECT OF THE INTERMEDIATE HEAT TREATMENT PROCESSES ON THE OXIDATION CHARACTERISTICS OF Zr-1Nb-0.2Y ALLOY IN 420 degrees C AIR

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	EFFECT OF THE INTERMEDIATE HEAT TREATMENT PROCESSES ON THE OXIDATION CHARACTERISTICS OF Zr-1Nb-0.2Y ALLOY IN 420 degrees C AIR
	Li Changji 1,2; Xiong Liangyin 1,2; Liu Shi 1,2
通讯作者	Liu Shi(sliu@imr.ac.cn)
	2016-01-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	52 期号:1 页码:85-92
摘要	Zr-based alloys have been used as cladding tubes in nuclear reactors for several decades due to their superior mechanical properties, good corrosion resistance and low neutron absorption cross-section. Zr alloys consist of hcp-structured alpha-Zr matrix and dispersed precipitate particles. These precipitate particles play a key role in improving the service performance of the alloy. In general, the manufacturing of Zr-based alloy tubes or sheets involves a series of deformation and annealing processes, which lead to a modification of the precipitate particles in size and distribution and an improvement of comprehensive properties of the alloys. In this work, the effect of intermediate heat treatment processes on precipitate particles and air oxidation characteristics of Zr-1Nb-0.2Y (mass fraction, %) alloy was studied. With increase of rolling and annealing times, the oxidation resistance of Zr-1Nb-0.2Y alloy was improved. The final product from manufacturing route II with intermediate annealing process of 640 degrees C, 3 h+570 degrees C, 3 h was proved to be most resistant to oxidation in 420 degrees C air. TEM images and EDS results showed that relevant parameters such as precipitate particle volume fraction, precipitate particle mean diameter, Nb+Y content (including mean content and total content) in precipitate particles were modified by intermediate annealing processes, which essentially influenced the oxidation characteristics of Zr-1Nb-0.2Y alloy. The smaller the mean size of precipitate particle and the higher the Nb+Y content in the precipitate particle are, the better the resistance to air oxidation of Zr-1Nb-0.2Y alloy.
关键词	Zr-1Nb-0.2Y alloy intermediate heat treatment process oxidation characteristics precipitate
资助者	National Natural Science Foundation of China
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[91126001]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000369466200011
出版者	SCIENCE PRESS
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/121617
专题	中国科学院金属研究所
通讯作者	Liu Shi
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Li Changji,Xiong Liangyin,Liu Shi. EFFECT OF THE INTERMEDIATE HEAT TREATMENT PROCESSES ON THE OXIDATION CHARACTERISTICS OF Zr-1Nb-0.2Y ALLOY IN 420 degrees C AIR[J]. ACTA METALLURGICA SINICA,2016,52(1):85-92.
APA	Li Changji,Xiong Liangyin,&Liu Shi.(2016).EFFECT OF THE INTERMEDIATE HEAT TREATMENT PROCESSES ON THE OXIDATION CHARACTERISTICS OF Zr-1Nb-0.2Y ALLOY IN 420 degrees C AIR.ACTA METALLURGICA SINICA,52(1),85-92.
MLA	Li Changji,et al."EFFECT OF THE INTERMEDIATE HEAT TREATMENT PROCESSES ON THE OXIDATION CHARACTERISTICS OF Zr-1Nb-0.2Y ALLOY IN 420 degrees C AIR".ACTA METALLURGICA SINICA 52.1(2016):85-92.