Formation of an (α+θ) microduplex structure without thermomechanical processing in superplastic ultrahigh carbon steels
Formation of an (α+θ) microduplex structure without thermomechanical processing in superplastic ultrahigh carbon steels
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DOI：
10.1016/s1359-6462(98)00486-2
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发表时间：
1999-02
影响因子：
6
通讯作者：
K. Tsuzaki;E. Sato;Shuji Furimoto;T. Furuhara;T. Maki
中科院分区：
文献类型：
--
作者：
K. Tsuzaki;E. Sato;Shuji Furimoto;T. Furuhara;T. Maki
ResultsFig。2为3个试样在923K等温转变后的SEM显微组织。在基体钢（钢1，图2 (a)）中可以看到晶界θ和魏氏态θ。添加Si的钢抑制了晶界θ的形成，但仍然可以看到威德曼施塔特θ板（图2 (b)）。在加入Si的钢中，还观察到少量未溶解的粗θ颗粒，大小为几微米，并且这些θ颗粒在长时间的保持中没有消失
ResultsFig. 2 shows SEM microstructures of three specimens after the isothermal transformation at 923K. Grain boundary θ and Widmansttaten θ are seen in the base steel (steel 1, Fig. 2 (a)). The formation of grain boundary θ is suppressed in the Si added steel, but Widmansttaten θ plates are still seen (Fig. 2 (b)). In the Si added steel a small amount of undissolved coarse θ particles with several microns in size are also observed, and these θ particles did not disappear by a prolonged holding up toDiscussion