热处理对高铬铸铁凝固组织及力学性能的影响  

Effect of Heat Treatment on Microstructure and Mechanical Properties of High Chromium Cast Iron

作　　者：刘玉高[1] 马幼平[2] 吕宝君[1] 李少红[1] 

机构地区：[1]青岛农业大学机电工程学院,山东青岛266109 [2]西安建筑科技大学冶金工程学院,陕西西安710055

出　　处：《热加工工艺》2009年第2期118-120,共3页Hot Working Technology

摘　　要：对高铬铸铁凝固组织进行热处理,力求改善高铬铸铁中基体组织、碳化物的尺寸、形态和分布,使之充分发挥材料潜力。研究结果表明:经热处理后,高铬白口铸铁中初生奥氏体的稳定性下降,在随后的冷却过程中转变为马氏体组织,而碳化物的形貌略有改善;在力学性能方面表现为较高的硬度和一定韧性的较佳匹配。Aiming to improve the size, shape and distribution of base microstructure and carbides, the heat treatment of high chromium cast iron was carried out. The results show that: after heat treatment, the stability of primary austenite in high chromium cast iron declines and subsequently transforms into martensite, the carbide morphology improves in some sort, resulting in the preferable matching of high hardness and favorable toughness.

关 键 词：高铬铸铁 碳化物 热处理 

分 类 号：TG163[金属学及工艺—热处理]