Temperature History and Metallographic Structure of 0.45%C Steel Processed by Frictional Stir Burnishing
Temperature History and Metallographic Structure of 0.45%C Steel Processed by Frictional Stir Burnishing
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温度%20历史%20和%20金相%20结构%20of%200.45%C%20钢%20加工%20by%20摩擦%20搅拌%20抛光
DOI：
10.1299/jamdsm.4.838
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发表时间：
2010
影响因子：
0.9
通讯作者：
H. Sasahara
中科院分区：
文献类型：
--
作者：
S. Kiuchi;H. Sasahara
通过搅拌摩擦抛光 (FSB) 工艺显着提高了硬度特性。强化区域是通过FSB工艺产生的，在主轴转速10000 min、进给速度200 mm/min、加工载荷750 N的条件下，厚度和硬度分别约为200 μm和900 HV。在压应力条件下加工温度约为600~750 ̊C。尽管该温度低于A3转变点（通常为780℃），但众所周知，A3转变点在压应力条件下会降低。而且工具通过后，温度迅速下降。该过程可以被认为与淬火过程相同。然而，获得的硬度值比普通淬火材料的硬度值更硬。当加工载荷为500N时，获得了超过1000HV的极硬区域。在这种情况下，认为材料没有转变为马氏体。由此可见，FSB的剧烈搅拌过程导致了晶粒细化。
Significant enhancement of hardness characteristics was achieved through the Frictional Stir Burnishing (FSB) process. The enhanced region was generated by the FSB process where the thickness and hardness were approximately 200 μm and 900 HV, respectively, under the conditions of spindle speed of 10000 min, a feed rate of 200 mm/min and a processing load of 750 N. The processing temperature was approximately 600~750 ̊C under compressive stress condition. Although this temperature is lower than A3 transform point (normally 780 ̊C), it is known that A3 transform point decreases under the compressive stress condition. And after the tool passed, the temperature dropped rapidly. This process can be assumed to be the same as a quenching process. However, the obtained hardness value is harder than that of the regular quenched material. When the processing load was 500 N, extremely hard regions over 1000 HV were obtained. In this case, it is thought that the material was not transformed into martensite. It can be concluded that the severe stirring process of FSB caused the grain refinement.
DOI：
10.1016/j.ijmachtools.2004.03.010
发表时间：
2004-09
影响因子：
14
作者：
T. Segawa;H. Sasahara;M. Tsutsumi
通讯作者：
T. Segawa;H. Sasahara;M. Tsutsumi