超高硬度堆焊材料强韧化分析  

Strengthening and Toughening of Super-High Hardness Surfacing Material

作　　者：周永强[1] 李午申[1] 冯灵芝[1] 

机构地区：[1]天津大学材料科学与工程学院,天津300072

出　　处：《天津大学学报（自然科学与工程技术版）》2004年第7期575-579,共5页Journal of Tianjin University：Science and Technology

基　　金：天津市自然科学基金资助项目(013604911).

摘　　要：针对超高硬度堆焊材料抗裂性差和韧性低的技术难点,以中碳合金系统为基础研究系统,用二次旋转回归设计的方法建立了堆焊金属性能的数学模型,并用函数图直观地分析了各合金元素对堆敷金属强韧性能的定量影响规律.结果表明,合金碳化物对堆敷金属性能影响显著,控制碳与合金元素的配比是获得性能优良的堆敷金属的关键.The existing surfacing material with super-high hardness is subject to crack and low toughness .In this paper, the implications of the chemical compositions on the performance of the surfacing layer are explored. A mild carbon alloy system is introduced and the mathematical model is established to show how the properties of the surfacing layer are determined by its alloying component through rotational regressive design.The equivalent curves are drawn to give a better understanding of the findings, which demonstrates that the influence of carbide in the alloy is statistically significant to the performance of the layer, and the appropriate percentage of alloy elements is critical to acquire final capabilities of the layer.

关 键 词：旋转回归设计 堆焊材料 强韧性 定量分析 

分 类 号：TG423[金属学及工艺—焊接] TG115