Work Hardening Behavior of Low Carbon Martensitic Steel
Work Hardening Behavior of Low Carbon Martensitic Steel
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低碳马氏体钢的加工硬化行为
DOI：
10.4028/www.scientific.net/kem.345-346.189
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
S. Takaki
中科院分区：
文献类型：
--
作者：
K. Nakashima;Y. Fujimura;T. Tsuchiyama;S. Takaki
研究了含12%Cr和18%Ni的超低碳和低碳马氏体钢的冷轧加工硬化行为，并从形变过程中位错密度的变化和组织演变的角度讨论了碳对加工硬化行为的影响。在超低碳钢中，硬度几乎是恒定的，与压下率无关。另一方面，低碳钢表现出显著的加工硬化。这些样品的位错密度被证实是从来没有增加冷轧。冷轧对马氏体束和块状组织形态无明显影响。冷轧后的TEM图像显示，超低碳钢中的马氏体板条部分消失，而含碳钢中的马氏体板条稳定保留。结果表明，固溶碳阻碍了位错的运动，通过在板条内形成细小的位错亚结构，提高了加工硬化率。
The work hardening behavior by cold rolling was investigated in ultralow carbon and low carbon martensitic steels containing 12%Cr or 18%Ni, and then the effect of carbon on the work hardening behavior was discussed in terms of the change in dislocation density and the microstructure development during deformation. In the ultralow carbon steel, the hardness is almost constant irrespective of the reduction ratio. On the other hand, the low carbon steel exhibits marked work hardening. The dislocation density of these specimens was confirmed to be never increased by cold rolling. It was also found that cold rolling gives no significant influence on the morphology of martensite packet and block structure. TEM images of the cold-rolled steels revealed that the martensite laths in the ultralow carbon steel are partially vanished, while those in the carbon bearing steel are stably remained. These results indicate that the solute carbon retards the movement of dislocations, which results in the high work hardening rate through the formation of fine dislocation substructure within laths.
DOI：
10.1016/0001-6160(53)90006-6
发表时间：
1953-01-01
期刊：
ACTA METALLURGICA
影响因子：
--
作者：
WILLIAMSON, GK;HALL, WH
通讯作者：
HALL, WH