Effect of temperature on silicon particle damage in A356 alloy

被引：52

作者：

Gokhale, AM ^{[1
]}

Dighe, MD ^{[1
]}

Horstemeyer, M ^{[1
]}

机构：

[1] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 1998年 / 29卷 / 03期

关键词：

D O I：

10.1007/s11661-998-0281-0

中图分类号：

T [工业技术];

学科分类号：

08 [工学];

摘要：

Thermal effects on the fraction of damaged silicon particles in a chill cast A356 aluminum alloy were studied. Notch tensile tests were performed at -51 °C, 21 °C, and 121 °C at a strain rate of 0.01 per second until fracture occurred. As the rate of silicon damage increased with inverse temperature, contribution of fracture mechanics to crack initiation and propagation was expected to be higher at lower temperatures. It was observed that large and elongated silicon particles fracture more frequently.

引用

页码：905 / 907

页数：3

共 10 条

[1]

CASTING DEFECTS AND THE FATIGUE BEHAVIOR OF AN ALUMINUM CASTING ALLOY [J].

COUPER, MJ ;

NEESON, AE ;

GRIFFITHS, JR .

FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES, 1990, 13 (03) :213-227

[2]

Relationship between microstructural extremum and fracture path in a cast Al-Si-Mg alloy [J].

Dighe, MD ;

Gokhale, AM .

SCRIPTA MATERIALIA, 1997, 37 (09) :1435-1440

[3]

GANGULEE A, 1967, T METALL SOC AIME, V239, P269

[4]

EFFECT OF SILICON PARTICLES ON THE FATIGUE-CRACK GROWTH-CHARACTERISTICS OF AL-12 WT-PCT SI-0.35 WT-PCT MG-(0 TO 0.02) WT-PCT SR CASTING ALLOYS [J].

LEE, FT ;

MAJOR, JF ;

SAMUEL, FH .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1995, 26 (06) :1553-1570

[5]

MAJOR JF, 1994, INT C EXP VEH SUSP S, P117

[6]

PAN EN, 1990, AM FOUNDRYMEN SOC T, V98, P735

[7]

A METALLOGRAPHIC STUDY OF POROSITY AND FRACTURE-BEHAVIOR IN RELATION TO THE TENSILE PROPERTIES IN 319.2 END-CHILL CASTINGS [J].

SAMUEL, AM ;

SAMUEL, FH .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1995, 26 (09) :2359-2372

[8]

Spear R.E., 1963, AFS Transactions, V71, P209

[9]

EFFECT OF MACRO-POROSITY ON THE STRENGTH AND DUCTILITY OF CAST AL-7SI-O.3MG ALLOY [J].

SURAPPA, MK ;

BLANK, E ;

JAQUET, JC .

SCRIPTA METALLURGICA, 1986, 20 (09) :1281-1286

[10]

The cracking mechanism of silicon particles in an A357 aluminum alloy [J].

Yeh, JW ;

Liu, WP .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1996, 27 (11) :3558-3568

← 1 →