白口铸铁机械性能研究及在农机制造中的应用(Ⅱ)  

Mechanical Properties of Modification Low Chromium White Cast Iron the Ability of it to be Used on Farm Machine(Ⅱ)

作　　者：刘锷[1] 肖于德[2] 邱立春[1] 

机构地区：[1]沈阳农业大学工程学院,沈阳110161 [2]中南大学材料科学与工程学院,长沙410083

出　　处：《农机化研究》2007年第7期148-150,共3页Journal of Agricultural Mechanization Research

摘　　要：研究了变质处理和热处理两种方法对低铬白口铸铁的组织及机械性能的综合影响。结果表明,经变质处理的低铬白口铸铁,在铸态下冲击韧性最高可达6.9J/cm2;经950℃×8h退火后,硬度最低为HRC20.2;经920℃×4h水淬,150℃×30min回火后,冲击韧性最高为10.1J/cm2,具有在农机领域广泛应用的前景。Effect of BZ modification and heat treatment on microstructure and mechanical properties of white cast iron with low chromium was studied in this paper. It has been found that the impact toughness value of white cast iron with low chromium as cast condition can reach 6.9 J.cm^-2： after 950℃ ×8h annealing, the hardness of it can reach HRC20.2; the value of impact toughness of white cast iron with low chromium can reach 10.1 J.cm^-2 when it is tempered （150℃×30min） after being heated to 920℃×4h and water quenched. This kind of white cast iron with low chromium can be vast used on agricultural machine territory.

关 键 词：金属学与金属工艺 低铬白口铸铁 试验 碳化物 变质处理 热处理 冲击韧性 硬度 

分 类 号：TG143.1[一般工业技术—材料科学与工程]