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Study on the Quenching Structure of a Plain Carbon Steel (5th Report) : On Formative Condition of Low Carbon Martensite

Memoirs of the Faculty of Engineering, Yamaguchi University Volume 21 Issue 2 Page 201-207
published_at 1970
KJ00000155815.pdf
[fulltext] 1.22 MB
Title
普通炭素鋼の焼入組織に関する研究(第5報) : 低炭素マルテンサイトの生成条件について
Study on the Quenching Structure of a Plain Carbon Steel (5th Report) : On Formative Condition of Low Carbon Martensite
Creators Fukui Takashi
Creators Tokihiro Yoshio
Creators Tamura Torao
Source Identifiers
Creator Keywords
Depth Perception Multiple Cues Cue Integration Adaptation Strong Fusion Model
It was generally believed that the mechanical properties of carbon steel were remarkably changed by heat treatment. But, generally speaking, in the case that the carbon content was below 0.2% it was difficult to expect the effect of heat treatment. In this paper, the present investigators, therefore, made a study of the effect of the quenching temperature and coolant on formatitive condition of low carbon martensite in the mild steel with carbon 0.07% preceded by normalizing at appropriate temperature through means of hardness, impact and metallography test. A summary of the results is shown below : (1) Except for spindle oil, in order to produce the maximum quench hardening effect it is necessary to quench after keeping 10 minutes about 900℃, and it is unconcerned in coolant. (2) 10% NaCl solution is best for coolant. (3) Factors affected on Charpy's impact value on the quenched mild steel are not hardness but its structure and austenite grain size.
Subjects
機械工学 ( Other)
Languages jpn
Resource Type departmental bulletin paper
Publishers 山口大学工学部
Date Issued 1970
File Version Version of Record
Access Rights open access
Relations
[ISSN]0372-7661
[NCID]AN00244228
Schools 工学部