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Effect of B Content on Morphology and Properties of BN Phase in Martensite Heat Resistant Steel |
Yulin MA, Yue LIU( ), Liping ZHANG, Ling ZHOU, Chunming LIU |
School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China |
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Cite this article:
Yulin MA, Yue LIU, Liping ZHANG, Ling ZHOU, Chunming LIU. Effect of B Content on Morphology and Properties of BN Phase in Martensite Heat Resistant Steel. Chinese Journal of Materials Research, 2017, 31(5): 345-351.
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Abstract In order to study the effect of different B element content on the microstructure and mechanical properties of martensitic steel microstructure prepared B element content was 0.012%, 0.02% and 0.03% of the ingredients, discussed the different elements in the matrix B influence mechanism BN phase morphology. The results showed that: with the increase of B content, size matrix BN phase is gradually increased, 0.03% B BN phase in the sample size to about 5 μm; 0.012% B sample tensile and yield strength of the highest value ; Fracture dimples 0.012% B sample in BN phase is the internal fragmentation of the massive, 0.03% B sample BN phase appears stacked sheets laminated spherical shape, because initially formed hexagonal BN phase nuclei in the form of structural growth , after reaching a critical size in the high B content side to locally grown under preferential growth is improved to increase the content of spherical BN B limits of size.
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Received: 14 January 2016
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Fund: Supported by National Natural Science Foundation of China (No.51334004), Liaoning Municipal Science and Technology Project (No.201404001) |
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