Time-Temperature Austenization Diagram of Hypo-eutectoid Steel
Bibliographic Information
- Other Title
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- 亜共析鋼の恒温オーステナイト化曲線
- アキョウセキ コウ ノ コウオン オーステナイトカ キョクセン
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Abstract
An austenitizing diagram representing the austenitizing process in the high frequency-or flame-hardening of carbon steels was obtained. This diagram is provisionally called T-T-A Diagram (Time Temperature-Austenitization Diagram) by the authors. The specimen steels (with C-contents: 0.20, 0.40 and 0.69%) were preliminarily heat-treated to give them various structures: fine pearlite, coarse pearlite and spheroidized cementite. In the experiments, the specimens were heated in a lead bath followed by rapid quenching in the water. Then the T-T-A Diagram was obtained from the change in hardness (Hv). The results were as follows: (1) Under the same pre-heat-treatment with different C-contents, austenitization starts at the same time, but finishes differently that is, the later with the less C-content. (2) Under different pre-heat-treatments with the same C-content, the specimen with a spheroidized cementite structure starts and finishes earliest, followed by one with a fine pearlite and one with a coarse pearlite in that order. (3) In rapid heating and quenching, if the specimen is heated up to the specified temperature, a very short holding time is sufficient for hardening. The spheroidized cementite structure is found effective.
Journal
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- Journal of the Japan Institute of Metals and Materials
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Journal of the Japan Institute of Metals and Materials 25 (8), 515-519, 1961
The Japan Institute of Metals and Materials
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Details 詳細情報について
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- CRID
- 1390001206481188608
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- NII Article ID
- 40018257974
- 130007332588
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- NII Book ID
- AN00187860
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- ISSN
- 18806880
- 24337501
- 00214876
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- NDL BIB ID
- 9153414
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed