Fatigue crack propagation in magnesium crystals

被引：16

作者：

Ando, S ^{[1
]}

Iwamoto, N ^{[1
]}

Hori, T ^{[1
]}

Tonda, H ^{[1
]}

机构：

[1] Kumamoto Univ, Fac Engn, Dept Mech Engn & Mat Sci, Kumamoto 8608555, Japan

来源：

JOURNAL OF THE JAPAN INSTITUTE OF METALS | 2001年 / 65卷 / 03期

关键词：

magnesium; single crystal; fatigue crack; twin; basal slip; stress intensity factor;

D O I：

10.2320/jinstmet1952.65.3_187

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The fatigue crack growth behavior of pure magnesium has been investigated in laboratory air at room temperature. Two type of compact specimens were prepared from magnesium polycrystalline ingot, and two type of compact specimens with different notch orientations were also prepared from magnesium single crystal made by the Bridgeman technique. Two types of fatigue crack propagation behavior were observed in the magnesium crystals. When a notch is normal to basal plane, a fatigue crack propagates though zigzag route with many basal slip. In the case of notch parallel to basal plane, a fatigue crack propagates through straight route with {10 (1) over bar2} twin, and the value of DeltaK(th), is smaller than that of fatigue crack propagation with basal slip.

引用

页码：187 / 190

页数：4

共 10 条

[1]

ANDO S., 1992, JAPAN I LIGHT METALS, V42, P765

[2]

Asada H., 1959, J JAPAN I METALS, V23, P649

[3] FATIGUE DAMAGE AND CRACK GROWTH IN ALUMINIUM ALLOYS [J].

FORSYTH, PJE .

ACTA METALLURGICA, 1963, 11 (07) :703-&

[4] Crack propagation behavior under cyclic loading in alpha-titanium single crystals [J].

Mine, Y ;

Ando, S ;

Takashima, K ;

Tonda, H ;

Higo, Y .

JOURNAL OF THE JAPAN INSTITUTE OF METALS, 1997, 61 (01) :41-48

[5] Crystallographic dependence of fatigue crack growth in titanium single crystals [J].

Mine, Y ;

Ando, S ;

Tonda, H ;

Takashima, K ;

Higo, Y .

JOURNAL OF THE JAPAN INSTITUTE OF METALS, 1998, 62 (08) :708-717

[6] Fatigue crack propagation in titanium single crystals [J].

Mine, Y ;

Yamada, T ;

Ando, S ;

Takashima, K ;

Tonda, H ;

Higo, Y ;

Bowen, P .

FRACTURE AND STRENGTH OF SOLIDS, PTS 1 AND 2: PT 1: FRACTURE MECHANICS OF MATERIALS; PT 2: BEHAVIOR OF MATERIALS AND STRUCTURE, 1998, 145-9 :721-726

[7]

Partridge P.G., 1967, METALS METALLURGY TR, V118, P169, DOI [10.1179/mtlr.1967.12.1.169, DOI 10.1179/MTLR.1967.12.1.169]

[8]

Pelloux R.M.N., 1970, Eng. Fract. Mech, V1, P697, DOI [10.1016/0013-7944(70)90008-1, DOI 10.1016/0013-7944(70)90008-1]

[9]

PELLOUX RMN, 1969, T ASM, V62, P281

[10]

YAMAMOTO M, 1971, KESSHO KOGAKU HDB, P276

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