抄録
In the present study alpha plus P yields gamma transformation behavior in various carbon steels over the range of up to 10**7 degree C/sec super-rapid heating was investigated. The main results are as follows: (1) The increments of transformation temperatures from the equilibrium points (Ac//1, A//c//3) in various carbon steels with increasing heating rates (up to 10**7** degree C/sec) were determined. A//c//3//f transformation curves of various hypoeutectoid steels are discontinuously jumped in two steps (0. 1%C:150 degree C/sec, 0. 3%C:250 degree C/sec, 0. 5%C:1000 degree C/sec), and with increasing heating rate, the curve approximated to the A//c//3//f point of pure iron. (2) A non-equilibrium phase diagram for less than 1. 4%C is shown. In this diagram the A//c//3//f line is flat ( equals 1130 degree C) and independent of the carbon contents at the heating rate of 10**6 degree C/sec. (3) In the alpha plus P yields gamma super-rapid heating transformation of hypoeutectoid steels there takes place two processes; i. e. , one is the P yields gamma diffusion process and the other is the alpha yields gamma diffusionless process; the former is the remained phase due to super-rapid heating.
| 元の言語 | English |
|---|---|
| ページ（範囲） | 255-261 |
| ページ数 | 7 |
| ジャーナル | Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals |
| 巻 | 39 |
| 発行部数 | 3 |
| 出版物ステータス | Published - 1975 3 |
| 外部発表 | Yes |
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ASJC Scopus subject areas
- Metals and Alloys
これを引用
ON THE NON-EQUILIBRIUM Fe-Fe//3C PHASE DIAGRAM IN SUPER-RAPID HEATING. / Iguchi, Nobuhiro; Yokota, Kiyoshi; Miwa, Yoshiyuki.
：: Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, 巻 39, 番号 3, 03.1975, p. 255-261.研究成果: Article
}
TY - JOUR
T1 - ON THE NON-EQUILIBRIUM Fe-Fe//3C PHASE DIAGRAM IN SUPER-RAPID HEATING.
AU - Iguchi, Nobuhiro
AU - Yokota, Kiyoshi
AU - Miwa, Yoshiyuki
PY - 1975/3
Y1 - 1975/3
N2 - In the present study alpha plus P yields gamma transformation behavior in various carbon steels over the range of up to 10**7 degree C/sec super-rapid heating was investigated. The main results are as follows: (1) The increments of transformation temperatures from the equilibrium points (Ac//1, A//c//3) in various carbon steels with increasing heating rates (up to 10**7** degree C/sec) were determined. A//c//3//f transformation curves of various hypoeutectoid steels are discontinuously jumped in two steps (0. 1%C:150 degree C/sec, 0. 3%C:250 degree C/sec, 0. 5%C:1000 degree C/sec), and with increasing heating rate, the curve approximated to the A//c//3//f point of pure iron. (2) A non-equilibrium phase diagram for less than 1. 4%C is shown. In this diagram the A//c//3//f line is flat ( equals 1130 degree C) and independent of the carbon contents at the heating rate of 10**6 degree C/sec. (3) In the alpha plus P yields gamma super-rapid heating transformation of hypoeutectoid steels there takes place two processes; i. e. , one is the P yields gamma diffusion process and the other is the alpha yields gamma diffusionless process; the former is the remained phase due to super-rapid heating.
AB - In the present study alpha plus P yields gamma transformation behavior in various carbon steels over the range of up to 10**7 degree C/sec super-rapid heating was investigated. The main results are as follows: (1) The increments of transformation temperatures from the equilibrium points (Ac//1, A//c//3) in various carbon steels with increasing heating rates (up to 10**7** degree C/sec) were determined. A//c//3//f transformation curves of various hypoeutectoid steels are discontinuously jumped in two steps (0. 1%C:150 degree C/sec, 0. 3%C:250 degree C/sec, 0. 5%C:1000 degree C/sec), and with increasing heating rate, the curve approximated to the A//c//3//f point of pure iron. (2) A non-equilibrium phase diagram for less than 1. 4%C is shown. In this diagram the A//c//3//f line is flat ( equals 1130 degree C) and independent of the carbon contents at the heating rate of 10**6 degree C/sec. (3) In the alpha plus P yields gamma super-rapid heating transformation of hypoeutectoid steels there takes place two processes; i. e. , one is the P yields gamma diffusion process and the other is the alpha yields gamma diffusionless process; the former is the remained phase due to super-rapid heating.
UR - http://www.scopus.com/inward/record.url?scp=0016485886&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0016485886&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0016485886
VL - 39
SP - 255
EP - 261
JO - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
JF - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
SN - 0021-4876
IS - 3
ER -