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| Existing Forms of TiN Nano Particles and Impacts on Matrix Microstructure of ZGMn13 Steel |
| WANG Wenyan1,2, YUAN Yasha1, YU Huiwu1, XIE Jingpei1, LI Yan1, LI Luoli1 |
1. Material Science and Engineering School, Henan University of Science and Technology,Luoyang 471023, Henan,China
2. Collaborative Innovation Center of Non-Ferrous Materials, Henan Province, Luoyang 471023, Henan, China |
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Abstract ZGMn13 steel containing trace amounts of nanometer-sized TiN was prepared by the method of argon insufflation. The existing forms of additional TiN particles and the influence on the morphology of high manganese steel were investigated. The morphology, composition and structure of TiN and ZGMn13 steel were analyzed by SEM, EDS and TEM. The results show that part of TiN nano particles got together while the other existed in austenite in nanometer, and had a better matching relation with austenite. There were crystallographic orientation relationship of [[1]11]γ//[[1]11 ]N, (202)γ//(202)N, [[1]11]γ//[[1]11 ]N, (220)γ//(220)N, [[1]11]γ//[[1]11 ]N, (422)γ//(422)N and [[1]12]γ//[0[1]1]N, (220)γ//(022)N, [[1]12]γ//[0[1]1]N, (1[1]1)γ//(200)N between austenite and TiN, and (1[1]1)γ//(200)N had a phenomenon of coherency. There were high density and mutual entanglement dislocations in the matrix, local region appeared paralleled ε-martensite which had the crystallographic orientation relationship of (1100)ε // (1[1]3)γ, [0001]ε// [1[5]2]γ with austenite, and they were coherency.
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Received: 18 February 2014
Published: 02 November 2014
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2014, Vol. 49 
