Influence of Different Pre-Heat Treatments on the Grain Size in the Core Region of Ultra-Clean Gear Steels

IF 0.3 Q4 THERMODYNAMICS
S. Rommel, D. Fuchs, T. Blum, T. Tobie, K. Stahl
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引用次数: 0

Abstract

Abstract In a previous publication, the influence of various process steps during the case-hardening process on the resulting material properties of two distinct batches of ultra-clean gear steels were investigated. The steel batches were case-hardened in the as-delivered condition. However, in the industrial practice it is common that pre-heat treatments are done, such as annealing to a ferritic-pearlitic microstructure, or quenching and tempering, as well as forging as a process if for example larger gears are needed. It is known that the whole heat treatment process route can affect the grain size negatively. Therefore, this publication presents investigations into the effects of preheat treatments on the grain size in the core region of ultra-clean gear steels after case-hardening. The aim is to receive a deeper understanding on how the whole process route influences the grain size in the core region of ultra-clean gear steels.
不同预热处理对超净齿轮钢芯区晶粒尺寸的影响
在之前的一篇文章中,研究了两批不同的超净齿轮钢在淬火过程中的不同工艺步骤对材料性能的影响。钢批在交货条件下进行了淬火。然而,在工业实践中,通常进行预处理,例如退火到铁素体-珠光体微观结构,或淬火和回火,以及锻造作为一个过程,例如,如果需要更大的齿轮。已知整个热处理工艺路线对晶粒尺寸有负面影响。因此,本出版物提出了对超净齿轮钢淬火后核心区域晶粒尺寸的预热处理的影响的研究。目的是更深入地了解整个工艺路线如何影响超净齿轮钢核心区域的晶粒尺寸。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
1.50
自引率
33.30%
发文量
43
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