Refining Mechanism of Ti on Hypereutectic High-Chromium Cast Iron

被引：0

作者：

Zhi Xiaohui ^{[1
]}

Han Yanjun ^{[1
]}

Xing Jiandong ^{[2
]}

Fu Hanguang ^{[2
]}

机构：

[1] Shijiazhuang Tiedao Univ, Shijiazhuang 050043, Peoples R China

[2] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2011年 / 40卷

关键词：

hypereutectic; titanium; refining; high-chromium cast iron; MICROSTRUCTURE; TITANIUM;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The refineing mechanisms of titanium on hypereutectic high-Chromium cast iron were studied using scanning electron microscope, energy-dispersive spectrometry and transmission electron microscope. The results of transmission electron microscope test indicate that the TiC particles and M(7)C(3) carbide have a certain orientation relationship. Theoretical calculation and experimental analysis indicate that the refining mechanisms of Ti alloy on the primary carbides are as follows: the first precipitated TiC particles can act as the heterogeneous nuclei of M(7)C(3) carbides and refine the carbides; the Ti element enriches at the surface of primary carbides to hinder the diffusion of C, Cr and Fe element at the surface of M(7)C(3) carbides, and thus decrease the growth velocity of the carbide and refine the carbide.

引用

页码：237 / 240

页数：4

共 8 条

[1]

BAIK HK, 1988, T AFS, V96, P405

[2] Effect of titanium on the as-cast microstructure of a 16%chromium white iron [J].

Bedolla-Jacuinde, A ;

Correa, R ;

Quezada, JG ;

Maldonado, C .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2005, 398 (1-2) :297-308

[3] EFFECT OF CARBIDE AND NITRIDE ADDITIONS ON HETEROGENEOUS NUCLEATION BEHAVIOR OF LIQUID IRON [J].

BRAMFITT, BL .

METALLURGICAL TRANSACTIONS, 1970, 1 (07) :1987-&

[4]

GUO CQ, 2006, J BAOTOU U IRON STEE, V25, P160

[5] Scouring erosion resistance of metallic materials used in slurry pump service [J].

Llewellyn, RJ ;

Yick, SK ;

Dolman, KF .

WEAR, 2004, 256 (06) :592-599

[6]

WU XJ, 2006, FOUNDRY, V155, P999

[7]

ZENG B, 2006, THESIS XIANGTAN U XI, P30

[8]

Zhi XH, 2008, RARE METAL MAT ENG, V37, P101

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