PSI - Issue 20

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2018) 000–000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2018) 000–000

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ScienceDirect

Procedia Structural Integrity 20 (2019) 190–197

1st International Conference on Integrity and Lifetime in Extreme Environment (ILEE-2019) Wear resistance factors of diamond-metal powder systems, obtained by explosive compaction 1st International Conference on Integrity and Lifetime in Extreme Environment (ILEE-2019) Wear resistance factors of diamond-metal powder systems, obtained by explosive compaction Yakovleva S.P. a, *, Makharova S.N. a , Vasilyeva M.I. a , Ptitsyna A.V. a a Siberian Branch of the Russian Academy of Sciences, Larionov Institute of Physical-Technical Problems of the North, 1 Oktyabrskaya Street, Yakutsk, 677980, Russia) Yakovleva S.P. a, *, Makharova S.N. a , Vasilyeva M.I. a , Ptitsyna A.V. a a Siberian Branch of the Russian Academ of Sciences, Larionov Institute of Physical-Technical Problems of the North, 1 Oktyabrskaya Street, Yakutsk, 677980, Russia) It is relevant the task of development of matrixes from relatively cheap and non-deficient powders for synthesis of instrumental diamond-metal materials. Radically new prospects for this are provided by explosive compaction, the possibilities of which are little studied in the case of diamond-containing powder mixtures. The aim of the work is to analyze the influence of explosive compaction and subsequent heat treatment on the main factors determining the wear resistance of diamond composites with iron carbon alloys matrix. The cylindrical loading scheme was used in experiments on explosive pressing; analytical studies were carried out by optical and scanning electron microscopy, microanalysis, etc. The compositions of two-component matrixes combining easily deformable and high-strength powders of iron-carbon alloys are proposed. The influence of synthesis modes on the structure and micromechanical characteristics of the matrix, the integrity of the diamond component, the elemental composition and morphology of the diamond-matrix boundary, the nature of the destruction of diamond particles during wear are analyzed. Comparative tests were carried out and it was shown that the wear resistance of experimental samples of diamond composites corresponds to the level of wear resistance of industrial diamond dressers, but at half the consumption of diamond raw materials. It is relevant the t sk of development of matrixes from relatively cheap and non-deficient owders for synthesis of instrumental diamond-metal materials. Radically new prospects for this are provid d by explosive compaction, the possibilities of which ar little studied in the case of diamond-containing powder mixtures. The aim of th work is to analyze the influence of explosive ompaction and subsequent heat treatment o the main factors determining the wear r sistance of diamond composites with iron rbon alloys matrix. The cylindrical loading scheme was used in experiments on explosive pressing; analytical studies were arried out by optical and scannin electron microscopy, microanalysis, etc. The compositions of two-component matrixes combining easily deformable and high-strength powders of iron-carbon alloys are pr posed. The influence of synthesis modes on the structure and micr mechanical characteristics of the matrix, the integrity of the diamond component, the elemental composition and morphology of the diamond-matrix boundary, the nature of the destruction of diamond p rticles during wear are analyzed. Comparative tests were carried out and it was shown that the wear resistance of experimental samples f i composites corresponds to the level of wear resistance of industrial diamond dressers, but at half the consumption of diamond raw materials. Abstract Abstract

© 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ILEE-2019 organizers © 2019 The Author(s). Published by Elsevier B.V. Peer-review under responsibility of the ILEE-2019 organizers © 2019 The Author(s). Published by Elsevier B.V. Peer-review under responsibility of the ILEE-2019 organizers

Keywords: diamond-metal powder material, explosive compaction, annealing, structure, diamond retention, diamond dresser, wear resistance. Keywords: diamond-metal powder material, explosive compaction, annealing, structure, diamond retention, diamond dresser, wear resistance.

* Corresponding author. Tel.: +8-411-239-0577. E-mail address: spyakovleva@yandex.ru * Correspon ing author. Tel.: +8-411-239-0577. E-mail address: spyakovleva@yandex.ru

2452-3216 © 2019 The Author(s). Published by Elsevier B.V. Peer-review under responsibility of the ILEE-2019 organizers 2452 3216 © 2019 Th Author(s). Publis d by lsevier B.V. Peer-review under responsibility of the ILEE-2019 organizers

2452-3216 © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ILEE-2019 organizers 10.1016/j.prostr.2019.12.138