华东交通大学学报2016，Vol.33Issue(6)：15-21,7.
双液双金属高Cr合金/钢复合材料性能优化热力学研究
Thermodynamic Study on Performance Optimization of Two-liquid Bimetal High Cr-containing Alloy/Steel Composite Materials
摘要
Abstract
Thermodynamic analysis was conducted for the two-liquid bimetal high Cr-containing alloy/steel com-posite materials manufactured by different companies, and the equilibrium solid solution and precipitation be-havior of trace elements in steels was studied in different temperature and chemical composition. The chemical composition of composite materials was optimized according to the specific engineering conditions, and the per-formance was then improved. This study shows:the solid solution quantity of each trace element decreases as the temperature decreases in Ti/Nb microalloyed steels, and the effects of Ti and Nb are more significant, the solid solution quantity of Ti declines rapidly in the range of carbonitride full dissolution temperature, until to 10509;the changing rule of k1, k2, m1 and m2 with temperature is complicated and the m2 decreases as the temperature decreases, but the k1 increases as the temperature decreases, so the proportion of second-phase changes at any time in the process of steel cooling;at high temperature phase, the precipitated mainly is TiN and at low temper-ature phase, the precipitated mainly is NbC; the composite material after optimizing has banded carbide in high Cr-containing alloy hammerhead with the mean hardness HRC62.6; the organization is bainite and refined tem-pered troostite in carbon steel hammerhandle with the mean hardness HRC43.6; the material application perfor-mance is significantly improved after optimizing, and the enterprise's market satisfaction and the competitiveness of products are thus enhanced.关键词
复合材料/成分优化/热力学/耐磨/断裂Key words
composite materials/composition optimization/thermodynamics/wear-resisting/fracture分类
通用工业技术引用本文复制引用
王艳林,周孟,庞晓露,王自东..双液双金属高Cr合金/钢复合材料性能优化热力学研究[J].华东交通大学学报,2016,33(6):15-21,7.基金项目
中国博士后科学基金(2016M591072) （2016M591072）
江西省青年科学家培养对象(20133BCB23032) （20133BCB23032）
