Effect of intermetallic particles and grain boundaries on short fatigue crack growth behaviour in a cast Al-4Cu-3Ni-0.7Si piston alloy

被引：13

作者：

Mbuya, T. O. ^{[1
]}

Gu, Y. ^{[2
]}

Thomson, R. C. ^{[2
]}

Reed, P. A. S. ^{[1
]}

机构：

[1] Univ Southampton, Engn Mat Grp, Fac Engn & Environm, Southampton SO17 1BJ, Hants, England

[2] Loughborough Univ Technol, Dept Mat, Loughborough LE11 3TU, Leics, England

来源：

FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES | 2017年 / 40卷 / 09期

关键词：

cast aluminium; fatigue; micromechanisms of fracture; piston alloys; short fatigue cracks; AL-SI ALLOYS; ALUMINUM-SILICON ALLOYS; HEAT-TREATMENT; ELEVATED-TEMPERATURE; INITIATION; MICROSTRUCTURE; ELEMENTS; DEFECTS; MODEL; LIFE;

D O I：

10.1111/ffe.12586

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The short fatigue crack growth behaviour in a model cast aluminium piston alloy has been investigated. This has been achieved using a combination of fatigue crack replication methods at various intervals during fatigue testing and post-mortem analysis of crack profiles. Crack-microstructure interactions have been clearly delineated using a combination of optical microscopy, scanning electron microscopy and electron backscatter diffraction. Results show that intermetallic particles play a significant role in determining the crack path and growth rate of short fatigue cracks. It is observed that the growth of short cracks is often retarded or even arrested at intermetallic particles and grain boundaries. Crack deflection at intermetallics and grain boundaries is also frequently observed. These results have been compared with the long crack growth behaviour of the alloy.

引用

页码：1428 / 1442

页数：15

共 73 条

[1] Three-dimensional rigid multiphase networks providing high-temperature strength to cast AlSi10Cu5Ni1-2 piston alloys [J].

Asghar, Z. ;

Requena, G. ;

Boller, E. .

ACTA MATERIALIA, 2011, 59 (16) :6420-6432

[2]

Barnes S., 2002, 2002010493 SAE, DOI [10.4271/2002-01-0493, DOI 10.4271/2002-01-0493]

[3] Experimental study of porosity and its relation to fatigue mechanisms of model Al-Si7-Mg0.3 cast Al alloys [J].

Buffière, JY ;

Savelli, S ;

Jouneau, PH ;

Maire, E ;

Fougères, R .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2001, 316 (1-2) :115-126

[4] The effect of solidification rate on the growth of small fatigue cracks in a cast 319-type aluminum alloy [J].

Caton, MJ ;

Jones, JW ;

Boileau, JM ;

Allison, JE .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1999, 30 (12) :3055-3068

[5] Fatigue crack growth and fracture paths in sand cast B319 and A356 aluminum alloys [J].

Chan, KS ;

Jones, P ;

Wang, QG .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 341 (1-2) :18-34

[6] Fluidized bed heat treatment of cast Al-Si-Cu-Mg alloys [J].

Chaudhury, S. K. ;

Apelian, D. .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2006, 37A (07) :2295-2311

[7] Characterisation of intermetallic phases in multicomponent Al-Si casting alloys for engineering applications [J].

Chen, C. L. ;

West, G. ;

Thomson, R. C. .

ALUMINIUM ALLOYS 2006, PTS 1 AND 2: RESEARCH THROUGH INNOVATION AND TECHNOLOGY, 2006, 519-521 :359-364

[8] Mechanical properties of intermetallic phases in multi-component Al-Si alloys using nanoindentation [J].

Chen, C. -L. ;

Richter, A. ;

Thomson, R. C. .

INTERMETALLICS, 2009, 17 (08) :634-641

[9]

Chen CK, 2006, THESIS

[10] The effect of alloying elements on the microstructure and mechanical propertles of Al-12Si cast alloys [J].

Cho, YH ;

Im, YR ;

Kwon, SW ;

Lee, HC .

THERMEC'2003, PTS 1-5, 2003, 426-4 :339-344

← 1 2 3 4 5 6 7 8 →