Effects of Microstructural Evolution and Mechanical Properties on 440C-TiC Composite Steel by HIP Treatment

摘要：

The aim of this paper is to investigate the effects of HIP treatment on 440C-TiC composite steel. In this study, AISI440C stainless steel powders were added with different amounts of TiC powders (25, 33 and 40 wt％), the composite materials were sintered at 1473 K, 1573 K, and 1673 K, followed by different pressures of HIP and HIP plus heat treatment. HIP treatments were used 120 and 150 MPa at 1523 K 1 hour. Experimental results showed that the microstructure of matrix had small needle structures after HIP treatment, which were effective in improving the hardness and strength. Furthermore 440C-TiC composite steels which were added with 25wt％ TiC powder after 1673 K sintered and high pressure HIP treatments, TiC powders were uniformly dispersed in the high chromium stainless steel matrix were observed and consequently possessed the higher hardness (HRA 85) and highest TRS (1213 MPa).

关键词： HIP Composite steel AISI 440C TiC powder Sintering TRS

作者: Shih-Hsien Chang Tzu-Piao Tang Kuo-Tsung Huang Jhewn-Kuang Chen Cheng Liang

作者单位: Qepartment of Materials and Mineral Resources Engineering,National Taipei University of Technology,T Department of Auto-Mechanics,National Siluo Agricultural Industrial High School,Yunlin County 64841,

会议类型: 国际会议

会议名称: 2010 International Conference on Material and Manufacturing Technology(2010材料与制造技术国际会议 ICMMT2010)

会议地点: 重庆

会议语种:英文

页码: 1114-1118

在线出版日期: 2010-09-17（万方平台首次上网日期，不代表论文的发表时间）