Fixed and Variable Temperature Super-Solidus Liquid Phase Sintering of High Chromium Cast Iron with 25 Wt.%CR and Its Microstructure

被引：2

作者：

Gu, Jinghong ^{[1
]}

Xiao, Pingan ^{[1
]}

Gu, Simin ^{[1
]}

Lv, Rong ^{[1
]}

Zhao, Jikang ^{[1
]}

Zhong, Siyuan ^{[1
]}

机构：

[1] Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Hunan, Peoples R China

来源：

METALS | 2021年 / 11卷 / 05期

基金：

美国国家科学基金会;

关键词：

high chromium iron; SLPS; microstructure; mechanical property; impact abrasive wear; WEAR; CARBIDES; BORON; M7C3;

D O I：

10.3390/met11050785

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A variable temperature super-solidus liquid phase sintering (SLPS) technique is employed in fabrication of high chromium cast iron (HCCI) with 25wt.%Cr to extend its sintering temperature window. Its microstructure evolution, mechanical properties, and abrasive wear behavior are investigated systemically. The results indicate that the variable temperature SLPS can obtain samples with full density plus fine and uniformly distributed carbide particles, and its carbide volume fraction is increased by 4 similar to 5% in comparison with the fixed temperature SLPSed one. Meanwhile, its bending strength and impact toughness can be raised by 8.0% and 16.7%, respectively. Finally, the sintering temperature window for variable temperature SLPS of HCCI is extended by 12 degrees C, reaching 27 degrees C.

引用

页数：12

共 19 条

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