Evaluation of hydrogen content trapped by vanadium precipitates in a steel

被引：55

作者：

Yokota, T ^{[1
]}

Shiraga, T ^{[1
]}

机构：

[1] NKK Corp, Mat & Proc Res Ctr, Kawasaki Ku, Kawasaki, Kanagawa 2100855, Japan

来源：

ISIJ INTERNATIONAL | 2003年 / 43卷 / 04期

关键词：

hydrogen; thermal desorption analysis; trap site; vanadium precipitate; martensitic steel;

D O I：

10.2355/isijinternational.43.534

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Hydrogen content trapped by vanadium precipitates was evaluated using vanadium bearing martensitic steels which show single TDA desorption peak, The peak consists of desorption from various sorts of trap site with different detrapping activation energy, even if it appears to be a single peak. Experimentally obtained single desorption profile taken from vanadium bearing martensitic steels was decomposed to multiple profiles with different peak temperature. Form of each desorption profile was approximated to Gaussian function. Area surrounded by each Gaussian function was calculated by integrating the functions to obtain decomposed hydrogen contents related to each peak temperature, It was revealed that decomposed profile with 140degreesC peak was caused by vanadium precipitates trapping, by comparing an amount of vanadium precipitates with decomposed hydrogen contents. Most of hydrogen in vanadium bearing tempered martensitic steel was revealed to be trapped by vanadium precipitates.

引用

页码：534 / 538

页数：5

共 13 条

[1]

ASAHI H, 1999, FUNCTION HYDROGEN EN, P36

[2] THERMAL-ANALYSIS OF TRAPPED HYDROGEN IN PURE IRON [J].

CHOO, WY ;

LEE, JY .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1982, 13 (01) :135-140

[3]

HARA T, 2002, CAMPISIJ, V15, P587

[4] Delayed fracture and hydrogen absorption of 1.3GPa grade high strength bolt steel [J].

Kushida, T ;

Matsumoto, H ;

Kuratomi, N ;

Tsumura, T ;

Nakasato, F ;

Kudo, T .

TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN, 1996, 82 (04) :297-302

[5]

Kushida T., 1997, ADV DELAYED FRACTURE, P35

[6] Effects of Ni and Si on delayed fracture properties of high strength steels with 1420 MPa grade [J].

Shiraga, T ;

Ishikawa, N ;

Ishiguro, M ;

Yamashita, E ;

Mizoguchi, S .

TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN, 1996, 82 (09) :777-782

[7]

SHIRAGA T, 2000, PROGR REPORT PROJECT, P51

[8] DIFFUSIBLE HYDROGEN BEHAVIOR IN PRE-STRAINED HIGH-STRENGTH STEEL [J].

SUZUKI, N ;

ISHII, N ;

TUCHIDA, Y .

TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN, 1994, 80 (11) :855-859

[9]

SUZUKI N, 1986, WIRE J INT, V11, P36

[10]

TAKAI K, 1995, TETSU TO HAGANE, V81, P1025

← 1 2 →