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| Crystallographic analysis of lath martensite in a 13Cr-5Ni steel by electron backscattering diff raction |
| Wen-bo Liu1 �� Peng-cheng Song 2 �� Chi Zhang3 �� Di Yun 1 �� Chun-fa Yao 4 �� Zhi-gang Yang 3 |
1 Department of Nuclear Science and Technology, Xi��an Jiaotong University, Xi��an 710049, Shaanxi, China
2 China Science and Technology on Reactor Fuel and Materials Laboratory, Nuclear Power Institute of China, Chengdu 610213, Sichuan, China
3 Key Laboratory of Advanced Materials of Ministry of Education, School of Materials Science and Engineering, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Tsinghua University, Beijing 100084, China
4 Central Iron and Steel Research Institute, Beijing 100081, China |
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Abstract Morphology observation and crystallographic analysis of lath martensite in 13Cr-5Ni steel were investigated by electron backscattering diffraction (EBSD) in a scanning electron microscope. The pole figures of the microstructure measured by EBSD showed that the martensite in this steel held the Kurdjumov�CSachs (K�CS) orientation relationship, and the boundary misorientations after the austenite�Cmartensite transformation were also analyzed. However, not all the 24 possible variants in the K�CS relationship were observed in a single prior austenite grain. Sub-blocks with special combinations were observed, which can be explained by the minimization of the total shape strain between the adjacent variants introduced during the martensite transformation and relatively low carbon content in the 13Cr-5Ni steel.
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Received: 20 July 2017
Published: 16 May 2018
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2018, Vol. 25 
