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| Effect of Rolling Process on Microstructure and Properties of 95CrMo Drill Steel |
| Wei YU1,Bao��sheng XIE2,Ban WANG1,Qing��wu CAI2,Shi��xin XU1 |
1. National Engineering Research Center of Advanced Rolling, University of Science and Technology Beijing,Beijing 100083, China
2. Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 100083, China |
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Abstract In order to improve the strength and toughness of 95CrMo steel and explore a short flow process, a direct rolling process was employed, and the effect of finishing rolling process on microstructure and mechanical properties was investigated. The results show that, with the decrease of finishing rolling temperature, inter��lamellar spacing increases, the strength as well as hardness has a general increase, and secondary cementite is distributed uniformly but represents a remarkable decrease in size. Based on Hall��Petch type equation, an effective relationship of yield strength and pearlite structure parameters was established. The correlation coefficients between the measured and calculated strength were more than 0��95, which indicated a high reliability of the relationship. By analyzing the individual strength contributions of pearlite structures, yield strength was found to have a more great dependence on pearlite inter��lamellar spacing than colony size.
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Received: 23 December 2015
Published: 02 September 2016
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| Fund:the National Science & Technology Pillar Program during the Twelfth Five-year Plan Period |
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Corresponding Authors:
Bao-Sheng Xie
E-mail: xiebaoshenghql@gmail.com
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2016, Vol. 23 
