Effect of molybdenum on the microstructure and wear resistance of hypoeutectic Fe-Cr-B-C hardfacing alloys

被引：5

作者：

汪圣林 ^{[1
]}

崔丽 ^{[2
]}

贺定勇 ^{[2
]}

刘昊 ^{[1
]}

王旭 ^{[2
]}

机构：

[1] Han's Laser Technology Industry Group Co,Ltd

[2] College of Materials Science and Engineering,Beijing University of Technology

来源：

China Welding | 2018年 / 27卷 / 04期

关键词：

hypoeutectic; hardfacing alloy; microstructure; wear resistance; molybdenum;

D O I：

暂无

中图分类号：

TG135.6 [];

学科分类号：

080502 ;

摘要：

Hypoeutectic Fe-Cr-B-C hardfacing alloys with different molybdenum（ Mo） contents（ The design content was 0,2,3. 3 and 4. 5 wt. %,respectively） were deposited using the flux-cored wire by means of metal active gas arc welding. The effects of Mo on the refinement of microstructures,eutectic microstructure changes and improvement of wear resistance were investigated. The main results were shown as follows: the added Mo could increase the volume fraction of eutectic microstructure and reduce the size of coarse primary austenite as well as the volume fraction. The carboboride of M3（ B,C） could be observed in hypoeutectic Fe-Cr-B-C hardfacing alloys at the Mo design content of ≤2. 0 wt. %,while that of M23（ B,C）6 was formed when 3. 3 wt. % Mo was added.Additionally,the wear resistance of alloys was increased with the increase in Mo content. Specifically,the highest wear resistance of alloys was achieved at 4. 5 wt. % Mo design content,which was 113. 7% higher than that in alloys without Mo.

引用

页码：46 / 51

页数：6

共 11 条

[1] Cr对Fe-Cr-B-C系堆焊合金热处理后的组织和磨损性能的影响 [J].

汪圣林 ;

崔丽 ;

贺定勇 ;

王智慧 ;

蒋建敏 .

材料热处理学报, 2015, 36 (10) :224-229

[2]

Study on improvement of hard phase morphology and properties of hypoeutectic Fe–C–B alloy[J] . Feng Li,Zhenhua Li. Journal of Alloys and Compounds . 2014

[3]

Effects of Mo on microstructure of as-cast 28wt.% Cr–2.6wt.% C–(0–10) wt.% Mo irons[J] . S. Imurai,C. Thanachayanont,J.T.H. Pearce,K. Tsuda,T. Chairuangsri. Materials Characterization . 2014

[4]

Effect of molybdenum and chromium contents in sliding wear of high-chromium white cast iron: The relationship between microstructure and wear[J] . Wear . 2009 (1)

[5]

Microstructural and abrasive characteristics of high carbon Fe–Cr–C hardfacing alloy[J] . Chia-Ming Chang,Yen-Chun Chen,Weite Wu. Tribology International . 2009 (5)

[6]

Microstructure and Wear Characteristics of Hypoeutectic, Eutectic and Hypereutectic (Cr,Fe)23C6 Carbides in Hardfacing Alloys[J] . Che Wei Kuo,Chieh Fan,Sheng Hao Wu,Weite Wu. MATERIALS TRANSACTIONS . 2007 (9)

[7]

Microstructure change caused by (Cr,Fe) 23 C 6 carbides in high chromium Fe–Cr–C hardfacing alloys[J] . Chieh Fan,Ming-Che Chen,Chia-Ming Chang,Weite Wu. Surface & Coatings Technology . 2006 (3)

[8]

Microstructure of vanadium-, niobium- and titanium-alloyed high-chromium white cast irons[J] . Arnoldo Bedolla-Jacuinde. International Journal of Cast Metals Research . 2001 (6)

[9]

Microstructure of Fe-Cr-C Hardfacing Alloys with Additions of Nb, Ti and, B[J] . H. BERNS,A. FISCHER. Materials Characterization . 1997 (2)

[10] Microstructure-property relationships in high chromium white iron alloys [J].

Tabrett, CP ;

Sare, IR ;

Ghomashchi, MR .

INTERNATIONAL MATERIALS REVIEWS, 1996, 41 (02) :59-82

← 1 2 →