The gross section fine grain material can be obtained by radial forging. One heat forging from ingot to finished products of high alloy with hard deformation can be realized.
径向锻造可获得全截面细晶材料，并实现高合金难变形材料由锭到材的一火次锻造。
The severe plastic deformation is the main mechanism of white layer formation during precision hard part machining process.
精密硬态切削表面白层的形成是剧烈塑性变形导致的。
The main reasons are the forming of eutectoid structure, the increase of the phase interfaces, the enhance of the plastic deformation resistance, as well as the increase of the hard particles.
这是因为该复合材料中形成了共析组织，且相界面增多，塑性变形抗力增大，硬质点数量增多。
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