Development of Light Weight High Strength Aluminum Alloy Piston with Cooling Gallery Manufactured Using Squeeze Casting Technique

Sato, Masato; Sasaki, M.; Nishimura, Yoichi; Okamura, Eiji

doi:10.4271/910434

Cited by 2 publications

(2 citation statements)

References 5 publications

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“…The assessment consisted of literature reviews, one-on-one discussions with engine designers, component developers, materials suppliers, and engine manufacturers. In addition, a threeday intensive workshop was held on September [21][22][23]1992 at Northwestern University, Evanston, Illinois. The attendees of the workshop were industrial experts specifically invited to attend the workshop.…”

Section: Imentioning

confidence: 99%

“…The use of light weight metals in engine parts is increasing. A favorite component area is the piston (21)(22)(23)(24)(25) to reduce inertia effects; however, other components such as valves, connecting rods, and oil pans have been suggested (26-28). These light weight metals are difficult to lubricate, are erosion prone, and may have much higher wear rates and lower load capacity.…”

Section: Lightweight and New Materialsmentioning

confidence: 99%

See 1 more Smart Citation

Advanced lubrication systems and materials. Final report

Hsu¹

1998

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Section: Imentioning

confidence: 99%

Section: Lightweight and New Materialsmentioning

confidence: 99%

Advanced lubrication systems and materials. Final report

Hsu¹

1998

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CRACK INITIATION AND SMALL FATIGUE CRACK GROWTH BEHAVIOUR OF SQUEEZE‐CAST Al‐Si ALUMINIUM ALLOYS

Shiozawa

Tohda

Sun

1997

Fatigue Fract Eng Mat Struct

113

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Fatigue strength, crack initiation and small crack growth behaviour in two kinds of squeezecast aluminium alloys, AC8A-T6 and AC4C-T6 were investigated using smooth specimens subjected to rotatary-bending fatigue at room temperature. Fatigue resistance of these alloys was almost the same as that of the wrought aluminium alloys because of their fine microstructure and of the decrease in defect size due to squeeze-casting. Fatigue crack initiation sites were at the eutectic silicon particles on the surface of specimens or at internal microporosity in the specimens. Crack initiation life, dehed as a crack length of 50 pm on the specimen surfam, was successfully estimated from an evaluation of initiation sites using fracture mechanics and the statistics of extrema. Small fatigue crack growth in the two kinds of alloys obeys the relation proposed by Nisitani et al., namely that d(2c)/dN= C(aa/a,)".(2c), where C is a constant and C T~ is the ultimate tensile strength. It is pointed out that an improvement in fatigue strength of cast aluminium alloys can be expected by refining the eutectic silicon rather than by an increase in static strength. NOMENCLATUREare&, = maximum projection area of silicon-particle =maximum projection area of microporosity C,, n = material constants 2c = surface crack length 2c,, 2c, = initial and final crack length d(2c)ldN =crack growth rate F ( x ) = cumulative probability K,__ = maximum stress intensity factor Nf = number of cycles to failure Ni = number of cycles to crack initiation Np = crack growth life So = standard inspection area Sr = ratio of the sum of crack lengths propagated within the cluster of Si-particles to the total crack length Sro = Sr when crack growth is independent of microstructure and is along a straight path T(x) = return period ua = stress amplitude CT, = ultimate tensile strength u0.* = 0.2% offset yield strength

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Development of Light Weight High Strength Aluminum Alloy Piston with Cooling Gallery Manufactured Using Squeeze Casting Technique

Cited by 2 publications

References 5 publications

Advanced lubrication systems and materials. Final report

Advanced lubrication systems and materials. Final report

CRACK INITIATION AND SMALL FATIGUE CRACK GROWTH BEHAVIOUR OF SQUEEZE‐CAST Al‐Si ALUMINIUM ALLOYS

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