Paper Title:
The Effect of Microstructure on Unidirectional Chilled Solidification of High Chromium White Cast Iron
  Abstract

This study mainly investigates the characteristics of carbide and the matrix structure of ASTM A532–87 CLASS Ⅲ high-chromium white cast iron under directional solidification. The two components of high-chromium white cast iron were put in a 3-level Furan sand model, which is placed in a cold-water circulation copper model, producing unidirectional chilled solidification. A K-type thermocouple is employed to measure data for solidification temperature with time. The move velocities of the liquidus phase and solidus phase is calculated. The matrix and the growth characteristics of M7C3 carbide are explored. As determined from the experiment, the liquidus temperature gradient GL is 0.45~ 0.9oC/mm, and the solidus temperature gradient Gs is 4.3~6.2oC/mm. Around 300 nm of the primary carbide is formed from the added elemental nickel being less than 0.3 mm from the chilled end and from the nickel-free alloy being less than 5 mm from the chilled end. As the distance from the chilled end increases, the primary carbide gradually becomes coarser, and the distance between eutectic carbide groups is increased. This study employs EPMA to analyze the changes of primary carbide, eutectic carbide and matrix components with distance from the chilled end, as well as changes in the distributions of chemical elements.

  Info
Periodical
Advanced Materials Research (Volumes 154-155)
Edited by
Zhengyi Jiang, Xianghua Liu and Jinglong Bu
Pages
1558-1570
DOI
10.4028/www.scientific.net/AMR.154-155.1558
Citation
S. Y. Dong, S. L. Tien, "The Effect of Microstructure on Unidirectional Chilled Solidification of High Chromium White Cast Iron", Advanced Materials Research, Vols. 154-155, pp. 1558-1570, 2011
Online since
October 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Shun Sang Na, Jian Sha Chen, Chao Fu, Guo Tao Zhang, Qian Xu
Metal alloy Materials
Abstract:The study on the phase transformation law of High-Carbon Matrix steel 4Cr-3Mo-3V-2W-Ni-Nb, which is processed in different heat treatment, is...
1610
Authors: Zhi De Huang
Chapter 3: Steel and Iron
Abstract:Microstructure and properties of Forging high Cr cast iron were investigated according to the requirements for production and application of...
552
Authors: Yong Qing Ma, Yu Mei Dai, Yu Fen Liang, Xiao Jing Zhang
Chapter 2: Materials Science and Engineering
Abstract:The temper-resistance temperature of Cr-W-Mo-V high carbon medium alloy steels is in a range at 200°C-300°C. Along with increasing C and...
591
Authors: Jun Ming Luo, Ji Lin Xu, Zheng Wei
Chapter 2: Materials Science and Engineering
Abstract:WC steel-bonded cemented carbides were prepared by microwave sintering through ball milling, press forming and sintering with iron powders as...
850
Authors: M. Mahajan, K. Singh, O.P. Pandey
Chapter 3: Nanomaterials
Abstract:Vanadium carbide is known for its applications due to extreme hardness and high melting point. In this present work, vanadium carbide...
95