INFLUENCES OF ADDITIONS OF Nb, Ti AND Cu ON DAMPING CAPACITY AND CORROSION RESISTANCE OF Fe-13Cr-2.5Mo ALLOY

CORC > 金属研究所 > 中国科学院金属研究所

	INFLUENCES OF ADDITIONS OF Nb, Ti AND Cu ON DAMPING CAPACITY AND CORROSION RESISTANCE OF Fe-13Cr-2.5Mo ALLOY
	Hu Xiaofeng; Li Xiuyan; Zhang Bo; Rong Lijian; Li Yiyi
刊名	ACTA METALLURGICA SINICA
	2009-06-01
卷号	45 期号:6 页码:717-722
关键词	Fe-Cr-Mo alloy damping capacity precipitation Nb Ti pitting corrosion
ISSN号	0412-1961
通讯作者	Li Xiuyan(xyli@imr.ac.cn)
英文摘要	Fe-Cr base high damping alloys (HDA), as the typical ferromagnetic type HDA, have been well investigated in a long history due to their merits in low cost and superior workability like steels, and are widely applied for suppression of noise or vibration in many industrial fields. The magnetoelastic coupling in ferromagnetic materials is well known to be an important source of internal friction, which could produce a high damping capacity. The damping mechanism has been mainly attributed to the strees-induced irreversible movements of magnetic domain walls. Fe-(12% 16%)Cr (2%-4%)Mo (mass fraction) base alloys were found to possess higher damping capacity and better corrosion resistance. As well known Nb, Ti and Cu can improve corrosion resistance of stainless steel. In the present work, dynamic mechanical analyzer (DMA) and field-emission scanning electron microscope (FESEM) were used to investigate the influences of additions of 1.0%Nb, 1.0%Ti and 0.5%Cu on the damping capacity and corrosion resistance of Fe-13Cr-2.5Mo alloy. The results show that addition of 1.0%Nb causes abundant precipitations of (Nb, Mo)C, which can obstruct the movement of domain walls, and significantly deteriorate the damping capacity at low strain amplitude. At strain amplitudes higher than 3.5 x 10(-5), the amplitude-dependent dislocation damping Q(dis)(-1) is generated due to dislocations interaction with (Nb, Mo)C, so the damping capacity of Nb-containing alloy becomes higher that other alloys. Addition of Ti or Cu inhibits the precipitation of grain-boundary carbides, while promotes the intragranular precipitations in the alloy distinctly. As a results, the damping capacity of the alloy with Ti or Cu is slightly lower than that of Fe-13Cr-2.5Mo alloy. Pitting corrosion test indicates that the three alloying elements can all improve the corrosion resistance of Fe-13Cr-2.5Mo damping alloy. The 1.0%Ti-containing alloy possesses not only high damping capacity but also good corrosion resistance.
资助项目	National Natural Science Foundation of China[50871110]
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000268359700013
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/98154]
专题	金属研究所_中国科学院金属研究所
通讯作者	Li Xiuyan
作者单位	Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Hu Xiaofeng,Li Xiuyan,Zhang Bo,et al. INFLUENCES OF ADDITIONS OF Nb, Ti AND Cu ON DAMPING CAPACITY AND CORROSION RESISTANCE OF Fe-13Cr-2.5Mo ALLOY[J]. ACTA METALLURGICA SINICA,2009,45(6):717-722.
APA	Hu Xiaofeng,Li Xiuyan,Zhang Bo,Rong Lijian,&Li Yiyi.(2009).INFLUENCES OF ADDITIONS OF Nb, Ti AND Cu ON DAMPING CAPACITY AND CORROSION RESISTANCE OF Fe-13Cr-2.5Mo ALLOY.ACTA METALLURGICA SINICA,45(6),717-722.
MLA	Hu Xiaofeng,et al."INFLUENCES OF ADDITIONS OF Nb, Ti AND Cu ON DAMPING CAPACITY AND CORROSION RESISTANCE OF Fe-13Cr-2.5Mo ALLOY".ACTA METALLURGICA SINICA 45.6(2009):717-722.