Characteristics of Al, Mg, Si and Cu element powders by mechanical alloying
Characteristics of Al, Mg, Si and Cu element powders by mechanical alloying
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发表时间：
2001
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通讯作者：
Feng Zhong
中科院分区：
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作者：
Feng Zhong
根据6061铝合金的成分，对Al、Mg、Si、Cu元素粉末进行机械合金化。测定并讨论了这些粉末的物相、合金化特性、晶格常数、晶粒尺寸和晶格应变。在机械合金化初期，晶粒尺寸可达纳米级，最细晶粒尺寸可达20 μ m。nm.一般情况下，晶格常数减小，晶格应变最终约为0.20%。韧性元素粉末在平面上的扩散路径较短，合金化容易实现。另外，脆性元素粉末只能通过较短的路径在点上扩散，合金化难度较大，只能部分实现。
According to the composition of 6061 aluminum alloy, the Al, Mg, Si and Cu element powders were mechanical alloyed. Physics phases, alloying character, lattice constant, grain size and lattice strain of these powders were determined and discussed. At an initial stage of mechanical alloying, grain size can reach up to nanometer level, the finest grain size reach up to 20?nm. Generally, lattice constant is decreased, lattice strain is about 0.20% finally. Ductile element powder can diffuse through a shorter path on the plane, thus, alloying of these element powders is carried out easily and can been realized fully. Otherwise, brittle element powder can only diffuse through a shorter path on the point, its alloying is more difficulty and can been realized partly.