单向凝固Fe－C－Cr合金自生复合材料组织和性能  

Microstructure and Mechanical Properties of Fe-C-Cr Composite in Situ by Unidirection Solidification

作　　者：陆利明[1] 朱振华[1] 柯绿[1] 

机构地区：[1]上海大学,上海工程技术大学

出　　处：《铸造》1995年第2期19-23,共5页Foundry

基　　金：上海市青年基金

摘　　要：通过单向凝固制取了Ｆｅ－Ｃ－Ｃｒ合金自生复合材料，并测定了力学性能，研究了化学成分对组织和性能的影响。试验结果表明，当Ｒ＝５８ｍｍ／ｈ、ＧＬ＝１４２℃／ｃｍ时含２．８５％Ｃ、３０．８５％Ｃｒ的共晶合金的抗拉强度可达２３００ＭＰａ以上，约为体积凝固时的８倍。The Fe-C-Cr composite in situ was produced by using method of unldirectlon solldification.The longittldinal mechanicalproperties ofthismaterial were measured and the influence of the chemlcal compositionon the strtlcture and propertleswas also investigated.The experimental result showed that,whenR=58mm/h and GL=142℃/cm, the tensile strength Of 2300 MPa can be aChieved for eutectic alloy containing 2.85%C and 30.85%Cr and it is about 8 times more than that of the alloy with same chemical composition at the normal solidlflcatlon conditions.

关 键 词：单向凝固 自生复合材料 铸造 显微组织 

分 类 号：TG244.3[金属学及工艺—铸造]