摘要
采用锻造、锻造开坯+轧制、轧制3种热加工方式制备出了5 mm厚的厚钼板,讨论分析了加工方式及总变形量对钼板退火组织的影响。结果表明,在同样的加工变形量下,锻造加工或者锻造开坯的加工方式更有利于退火后板材细小均匀晶粒组织的形成。在同样的压力加工方式下,加工总变形量越大,钼板完成再结晶的温度越低,晶粒组织也相对细小均匀。在板材的热加工过程中,应该使其总的加工变形量大于70%,并尽可能采用大的道次变形量。
The molybdenum plates with thickness of 5 mm were prepared by three hot working methods,which are forging,forging cogging plus rolling and rolling;and the effects of hot working methods and total deformation amounts on the annealing microstructure of molybdenum plates were discussed.The results show that,under the same amount of deformation,it is favorable for forging method or forging cogging method to form fine and uniform grain structures after annealing.And under the same hot working method,the greater of the total deformation amount of molybdenum plate is,the lower of the recrystallization temperature is,and the finer and more uniform of grain structures are.During the hot working process of molybdenum plates,the total deformation amount should be more than 70%,and the reduction in pass should be increased as much as possible.
出处
《中国钼业》
2012年第2期52-55,共4页
China Molybdenum Industry
关键词
热加工
总变形量
厚钼板
退火组织
再结晶
hot working
total deformation
thick molybdenum plates
annealing structure
recrystallization
