Effects of alloying elements with various heat treatment processes on the properties of high speed steels

Metallic Materials Pub Date : 2021-01-01 DOI:10.4149/KM.2013.3.205

A. Kisasoz, G. O. Toptop, A. Karaaslan

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Abstract

In this study, effects of alloying elements and different heat treatment processes on the properties of DIN 1.3243, DIN 1.3343 and ASP 2052 were investigated. Austenitizing and tempering temperatures are critical parameters for the hardening of steels. Also, alloying elements have critical effect on microstructure and mechanical properties of steels. Various austenitizing temperatures with two tempering temperatures were implemented to samples. Effects of alloying elements, process parameters on the mechanical properties and tooling abilities of the specimens were investigated. Rockwell hardness tests were carried out on specimens, and their tooling abilities were characterized by the number of screws that were fabricated with specimens. According to the results of experiments, higher hardness values were obtained for elevated austenitizing temperatures. Besides, higher hardness values were obtained due to presence of alloying elements and formation of secondary carbides during tempering process. Moreover, tooling ability of the specimens increased with higher hardness values and formation of alloy carbides. Hot work properties of specimens were evolved by Co. K e y w o r d s: high speed steels, hardness test, hardening, tempering

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不同热处理工艺下合金元素对高速钢性能的影响

研究了合金元素和不同热处理工艺对DIN 1.3243、DIN 1.3343和ASP 2052性能的影响。奥氏体化和回火温度是钢硬化的关键参数。合金元素对钢的显微组织和力学性能也有重要影响。对样品进行了不同的奥氏体化温度和两种回火温度。研究了合金元素、工艺参数对试样力学性能和加工能力的影响。对试样进行了洛氏硬度试验，并用试样加工的螺钉数量来表征其加工能力。实验结果表明，提高奥氏体化温度可获得较高的硬度值。此外，由于回火过程中合金元素的存在和次生碳化物的形成，合金的硬度值也较高。硬度值越高，合金碳化物的形成越明显，加工能力越强。通过对高速钢、硬度试验、淬火、回火等试验，对试样的热加工性能进行了研究

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Metallic Materials

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