稀土高温钼板室温塑韧性研究  

Study on the Room-Temperature Plasticity and Toughness of Rare Earth Oxide-Doped Molybdenum Sheet

作　　者：王新刚[1] 韩强 赵宝华 

机构地区：[1]西安交通大学材料学院,陕西西安710049 [2]华钼新材料股份有限公司,陕西西安710100 [3]金堆城钼业公司技术中心,陕西西安710068

出　　处：《稀有金属》2003年第1期80-82,共3页Chinese Journal of Rare Metals

摘　　要：稀土高温钼板坯和纯钼板坯经锻造开坯之后进行热轧与交叉换向温轧成 1 0mm的薄板 ,通过研究其高温退火后的室温力学性能 ,结果表明稀土高温钼板比纯钼板抗拉强度和延伸率高很多 ,掺杂稀土氧化物能显著地提高纯钼板的室温韧性和再结晶温度。由此探讨了弥散质点二维定向分布对稀土高温钼板微观组织形成和优异室温韧性的作用。弥散质点与位错的交互作用 ,阻碍了晶界沿径向的运动 。The rare earth oxide doped molybdenum and pure molybdenum slab was rolled to 1 0 mm sheet by hot rolling and tandem warm rolling after hammer cogging, and their room temperature mechanical property after high temperature annealing was researched The results show that the tensile strengh and specific elongation of rare earth oxide doped molybdenum sheet is much higher than pure molybdenum shee, and rare earth oxide could obviously improve room temperature toughness and recrystallization temperature of pure molybdenum sheet The effect of dispersion particle two dimension distribution on forming microstructure and room temperature toughness of rare earth oxide doped molybdenum sheet was discussed The interaction between dispersion particle and dislocation blocks the radial movement of grain boundary and the rare earth oxide doped molybdenum sheet exhibits excellent comprehensive mechanical property

关 键 词：稀土高温钼板 强度 塑韧性 

分 类 号：TG146.412[一般工业技术—材料科学与工程]