The influence of the carbon addition on the microstructure of a U-Nb alloy and the features of Nb2C inclusions

被引：5

作者：

Chen, Dong ^{[1
]}

Ma, Rong ^{[1
]}

Chen, Xianglin ^{[1
]}

Wang, Zhenhong ^{[1
]}

Su, Bin ^{[1
]}

Zhang, Xinjian ^{[1
]}

Meng, Daqiao ^{[1
]}

机构：

[1] China Acad Engn Phys, Mianyang 621900, Peoples R China

来源：

METALLURGICAL RESEARCH & TECHNOLOGY | 2018年 / 115卷 / 03期

关键词：

U-Nb alloy; microstructure; inclusion; morphology; METALLOGRAPHIC PREPARATION TECHNIQUES; WATER-VAPOR; MECHANICAL-PROPERTIES; CORROSION BEHAVIOR; TENSILE PROPERTIES; URANIUM; FRACTURE; KINETICS; SIZE; AIR;

D O I：

10.1051/metal/2017098

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The effects of the carbon addition on the morphology, composition, size distribution and formation mechanism of inclusions in a U-5.5 Nb alloy were discussed. The influence of the carbon content on the microstructure and hardness were also investigated. The methods used in the present study were scanning electron microscopy coupled with energy dispersive X-ray spectroscopy, optical microscopy, and hardness measurements. The results show that the carbon content obviously affects the morphology, size distribution and area fraction of the Nb2C inclusions. Moreover, characterization of the inclusion morphology shows that the Nb2C inclusions form in the liquid and subsequently grow, collide and agglomerate to form clusters. Meanwhile, the average grain size significantly decreases, and the hardness increases with increasing carbon content in the U-5.5 Nb alloy.

引用

页数：7

共 27 条

[1]

Avery J., 1974, Effect of innoculation of uranium and uranium--6 weight percent niobium with 0.01 to 1.0 weight percent titanium on impurity levels

[2] Impurity precipitation in atomized particles evidenced by nano x-ray diffraction computed tomography [J].

Bonnin, Anne ;

Wright, Jonathan P. ;

Tucoulou, Remi ;

Palancher, Herve .

APPLIED PHYSICS LETTERS, 2014, 105 (08)

[3] THE EFFECT OF INCLUSIONS ON THE FRACTURE OF URANIUM [J].

DAVIES, DM ;

MARTIN, JW .

JOURNAL OF NUCLEAR MATERIALS, 1961, 3 (02) :156-161

[4] THE EFFECT OF QUENCH RATE ON THE MICROSTRUCTURE, MECHANICAL-PROPERTIES, AND CORROSION BEHAVIOR OF U-6 WT PCT NB [J].

ECKELMEYER, KH ;

ROMIG, AD ;

WEIRICK, LJ .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1984, 15 (07) :1319-1330

[5] THE CARBIDES OF URANIUM [J].

FROST, BRT .

JOURNAL OF NUCLEAR MATERIALS, 1963, 10 (04) :265-300

[6] Corrosion of uranium in air and water vapor: consequences for environmental dispersal [J].

Haschke, JM .

JOURNAL OF ALLOYS AND COMPOUNDS, 1998, 278 (1-2) :149-160

[7] THE EFFECT OF STRAIN RATE ON THE TENSILE FLOW AND FRACTURE OF ALPHA-URANIUM [J].

HUDDART, J ;

HARDING, J ;

BLEASDALE, PA .

JOURNAL OF NUCLEAR MATERIALS, 1980, 89 (2-3) :316-330

[8]

Jiang CL, 2008, RARE METAL MAT ENG, V37, P98

[9] Influence of Nb content on grain size and mechanical properties of 18 wt% Cr ferritic stainless steel [J].

Kang, Y. ;

Mao, W. M. ;

Chen, Y. J. ;

Jing, J. ;

Cheng, M. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2016, 677 :453-464

[10] Metallographic preparation techniques for U-6 wt.%Nb [J].

Kelly, A. M. ;

Field, R. D. ;

Thoma, D. J. .

JOURNAL OF NUCLEAR MATERIALS, 2012, 429 (1-3) :118-127

← 1 2 3 →