【摘 要】
：
分析了机械合金化过程中粉体能量储存对固态烧结过程的影响。以具有正的混合热的Fe-Cu粉体为研究对象,分析了Fe-Cu粉体在机械合金化中存在的储能现象及其与机械合金化过程时
【机 构】
：
燕山大学亚稳材料制备技术与科学国家重点实验室,
论文部分内容阅读
分析了机械合金化过程中粉体能量储存对固态烧结过程的影响。以具有正的混合热的Fe-Cu粉体为研究对象,分析了Fe-Cu粉体在机械合金化中存在的储能现象及其与机械合金化过程时间的关系,提出了存在最高储能的机械合金化时间,这一储能对固态烧结具有积极意义。研究认为:机械合金化进程中,粉体粒度、晶粒度、应变、缺陷等不平衡因素导致能量提高,固态烧结加热过程中能量的释放促进了颗粒表面物质交换,从而提高了粉体固态可烧结性,改善了烧结组织。
The influence of powder energy storage on solid state sintering during mechanical alloying was analyzed. Taking Fe-Cu powder with positive mixed heat as the research object, the existence of energy storage phenomenon in the mechanical alloying of Fe-Cu powder and its relation with the mechanical alloying process time were analyzed. The existence of the highest energy storage Of the mechanical alloying time, this storage of solid-state sintering has a positive meaning. It is concluded that the unbalanced factors such as grain size, grain size, strain and defects in the process of mechanical alloying lead to the increase of energy. The release of energy in the process of solid state sintering and heating promotes the exchange of particles’ surface materials, Sintering improves the sintered structure.
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