Studying plastic deformation on mesoscale level of steel 15NZMA boride samples with thin hardened layers

Proceedings of the 9th International Scientific and Practical Conference of Students, Post-graduates Modern Techniques and Technologies, 2003. MTT 2003. Pub Date : 2003-04-07 DOI:10.1109/SPCMTT.2003.1438187

V. Ivanenko, A. Koval, Y. Pochivalov

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Abstract

Results of experimental investigations of the behavior of materials with homogeneous hardened layers on the surface with plain boundary showed that with active tension, the system of cross cracks quasiperiodically arranged occurs. This paper aims to study the plastic deformation of the samples with thin hardened layers characterized by complex form of the boundary under pressing. It shows the curves of the flow of the nonhardened and hardened samples of the steel 15NZMA. Based on the results, it was concluded that thin boride layers increase the deformation resistance, hence the samples strength of the steel 15NZMA. Also, great difference of strength characteristics of the matrix and coating materials as well as the non-planar boundary form between substrate and boride layer formed on the steel 15NZMA result in strong localization of the deformation of the boundary with loading.

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薄硬化层硼化钢15NZMA试样的中尺度塑性变形研究

实验研究了具有均匀硬化层的材料在平面边界表面的行为，结果表明，在主动张力作用下，出现了准周期性排列的交叉裂纹系统。本文旨在研究具有复杂边界形式的薄硬化层试样在挤压作用下的塑性变形。给出了15NZMA钢未硬化和硬化试样的流动曲线。结果表明，薄硼化物层增加了钢的抗变形能力，从而提高了试样的强度。基体与涂层材料强度特性的巨大差异以及基体与硼化物层在15NZMA钢上形成的非平面边界形式导致加载时边界变形的强局部化。

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Proceedings of the 9th International Scientific and Practical Conference of Students, Post-graduates Modern Techniques and Technologies, 2003. MTT 2003.

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