Kurapov, Georgy

Volokitina, Irina

English

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8th International Conference on Physical and Numerical Simulation of Materials Processing (ICPNS)14–17 October 2016Seattle, Washington | Hosted by Purdue UniversitySESSION 6: LIGHT ALLOYS, MARITIME HALLCo-Chairs: Qigui Wang, General Motors Company Pontiac; Tongmin Wang, Dalian University of Technology; Jianxin Zhou, Huazhong University of Science and Technology; Lianxi Hu, Harbin Institute of TechnologySATURDAY, OCTOBER 15, 2016Effect of preliminary heat treatment on change in microstructure of brass CuZn36 during pressing in equal channel step matrixIrina Volokitina; Georgy Kurapov, Kazakh National Research Technical University named after K. SatpayevABSTRACTThe effect of the pre-heat treatment and equal channel angular pressing (ECAP) in step matrix to the micro-structure and properties of brass CuZn36 was researched. The laws of transformation of macro-crystalline brass structure into ultra micro-grained under the influence of ECAP. It is shown that in the equal channel step matrix, the pressing can be conducted only at high temperatures; at room temperature, during the first pass, the samples already are destroyed. As the destruction of the samples is due to the solid -phase, the brass should be heated till 500°C during the pressing, as when it is heated above 450°C, β-phase is converted to a disordered solid solution β|, wherein greater plasticity than the β-phase is. It was determined that the increase of cycles of deformation in-creases the amount of β-phase, and as a result, after three passages, the samples are destroyed.KEYWORDS: brass, microstructure, destruction, preliminary heat treatment, equal channel angular pressing

Effect of preliminary heat treatment on change in microstructure of brass CuZn36 during pressing in equal channel step matrix

https://docs.lib.purdue.edu/cgi/viewcontent.cgi?article=1114&amp;context=icpns

Effect of preliminary heat treatment on change in microstructure of brass CuZn36 during pressing in equal channel step matrix

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