Surface nanocrystallization of iron induced by ultrasonic shot peening
Surface nanocrystallization of iron induced by ultrasonic shot peening
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DOI：
10.1016/s0965-9773(99)00324-4
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发表时间：
1999-06-01
期刊：
影响因子：
--
通讯作者：
Lu, K
中科院分区：
文献类型：
--
作者：
Tao, NR;Sui, ML;Lu, K
使用超声射击（USSP）技术在纯Fe板上制造纳米晶表面层。通过X射线衍射（XRD）和透射电子显微镜（TEM）来表征USSP诱导的表面纳米结晶产物。实验证据表明，在USSP处理后，将表面层中的初始粗粒结构完善成具有随机晶体学取向的等亚式超铁粒（约10nm）。讨论了USSP治疗过程中的谷物细化机制。 （c）1999 Acta Metallurgica Inc.
A nanocrystalline surface layer was fabricated on a pure Fe plate by using an ultrasonic shot peening (USSP) technique. The USSP induced surface nanocrystallization products were characterized by means of X-ray diffraction (XRD) and transmission electron microscope (TEM). Experimental evidences showed that after USSP treatments, the initial coarse-grained structure in the surface layer was refined into equiaxed ultrafine grains (about 10nm) with random crystallographic orientations. The grain refinement mechanism during USSP treatments is discussed. (C)1999 Acta Metallurgica Inc.