Residual stress generation in metal matrix composites after cooling

Wong, Choo Siew; Pramanik, Alokesh; Basak, A.K.

doi:10.1080/02670836.2018.1458460

Cited by 17 publications

(7 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[82][83][84] Residual stress is also seen as a major reason for inconsistent microstructure in AM parts, [4] a situation that will be of more concern in MMC fabrication due to the reinforcement-matrix material thermal property differences. A report by Wong [85] stated that residual stress in MMC increases with increase in reinforcement content. Residual stress in MMCs is linked to thermal mismatch between the matrix and the reinforcement, [85] and it has been showed that the stress arises due to accumulated heat during high-temperature processing or heat treatment which results in the retained residual stress during cooling.…”

Section: Residual Stressmentioning

confidence: 99%

“…A report by Wong [85] stated that residual stress in MMC increases with increase in reinforcement content. Residual stress in MMCs is linked to thermal mismatch between the matrix and the reinforcement, [85] and it has been showed that the stress arises due to accumulated heat during high-temperature processing or heat treatment which results in the retained residual stress during cooling. [86][87][88] A further effect (nanoscale twins) induced by thermal mismatch is linked to the size of the reinforcement particles, and is reported to be more noticeable at high volume fraction of smaller sized reinforcement particles.…”

Section: Residual Stressmentioning

confidence: 99%

“…[88] Research has also shown that the thermally induced stress varies with reinforcement particle size, [91] though another publication contradicted the report. [85] The presence of residual stress in MMCs is known to encourage other defects like dislocation, cracks, and fatigue. [92][93][94][95] Heat treatment has been recommended for relieving residual stress in AM-processed parts.…”

Section: Residual Stressmentioning

confidence: 99%

See 2 more Smart Citations

Issues in Metal Matrix Composites Fabricated by Laser Powder Bed Fusion Technique: A Review

Essien

Vaudreuil

2022

Adv Eng Mater

View full text Add to dashboard Cite

Technologies for the additive manufacturing (AM) of metals have progressed throughout the years, with significant improvements in both quality of AM components and wider scale application. In just about every current application for powder bed fusion (PBF) processes, the powders used are alloys of base metals like aluminum, iron, nickel, cobalt, and titanium, with a chemistry sometimes adapted to enable their processing by a laser-based system. While the current state of development enables the production of parts for demanding industries such as aerospace, a new class of materials such as metal matrix composites (MMCs) could enhance further applications of AM-fabricated metallic parts. MMCs combine a metallic powder with a reinforcing agent, a ceramic powder being the most commonly used. These powders can be mixed, blended, or mechanically alloyed together into a composite powder, before being consolidated layer-by-layer into the designed part. [1] This part will exhibit reinforcement particles dispersed within the bulk metal matrix. The MMCs development thus needs to achieve enhanced properties through a compromise between tenacity of the matrix and the rigidity of reinforcing particles. Figure 1 shows a schematic of processed MMC and its processing steps.The PBF process uses a high energy laser to fuse powder particles into a near net shape component. Combining different parameters (preprocessing, processing, etc.) to produce a fully dense part in AM is, however, a complex process. The consolidation process involves multiple phenomena such as heating (thermal expansion), melt pool formation, solidification, and cooling (thermal contraction), all of which occur simultaneously and in a repeated manner. [2,3] This process complexity is increased significantly when trying to attain fully dense MMC from metal and ceramic. Multiple reasons are involved, ranging from the raw materials used to interactions between laser and powder. A segregation of dissimilar materials found in the composite powder (mixed powder system) can arise on the build platform during feeding. [4] This would create issues of particles clustering and uneven dispersion, encouraging further defects formation.The capability of fabricating fully dense components with desired properties (mechanical, electrical, etc.) and less defects in AM has been the focus of researchers and industries. [5] However, inherent defects like porosities and surface roughness in AM parts remain a challenge. Various factors related to AM machines, material properties, and processing parameters are responsible for these defects.Processing parameters influence the overall quality of AM parts by influencing temperature gradients, consolidation and solidification, thermal-induced stresses as well as the susceptibility of PBF-processed part to defects. Changes in powder chemical composition can influence consolidation and defect generation. [6,7] Proper considerations must, thus, be given in understanding, predicting, and preventing defects in PBF-processed

show abstract

Section: Residual Stressmentioning

confidence: 99%

Section: Residual Stressmentioning

confidence: 99%

Section: Residual Stressmentioning

confidence: 99%

See 1 more Smart Citation

Issues in Metal Matrix Composites Fabricated by Laser Powder Bed Fusion Technique: A Review

Essien

Vaudreuil

2022

Adv Eng Mater

View full text Add to dashboard Cite

show abstract

“…The composite melt is thereafter cast into molds and allowed to solidify. The process has some shortcomings including the tendency for segregation [ 2 ], formation of intermetallic phases owing to high-temperature reactions [ 3 ], agglomeration as a result of density difference [ 4 ] and inducement of residual stress due to thermal mismatch [ 5 ], amidst others. The defects earlier mentioned could occur owing to high or low stirring temperature, high or low stirring speed, or other likely reasons.…”

Section: Introductionmentioning

confidence: 99%

Optimization of selected casting parameters on the mechanical behaviour of Al 6061/glass powder composites

Akinwande

Adediran

Balogun

et al. 2022

Heliyon

View full text Add to dashboard Cite

“…R ecently, most conventional materials are replaced with composites in various applications, due to their high stiffness, high strength, light weight and good creep resistance [1,2] . Aluminium alloy is commonly used in the high volume casting process because it is one of the most economical materials [3] that can be used for automotive, aerospace and defence industries [4] .…”

mentioning

confidence: 99%

Investigations on tribo-mechanical behaviour of Al-Si10-Mg/sugarcane bagasse ash/SiC hybrid composites

Subramanian

Balaji

Nallasivam³

et al. 2019

China Foundry

View full text Add to dashboard Cite

The effect of mechanical and tribological behaviour of aluminium alloy (Al-Si10-Mg) with sugarcane bagasse ash and silicon carbide reinforced metal matrix composites were investigated. Al-Si10-Mg alloy reinforced with 9wt.% of treated sugarcane bagasse ash particles of size (< 75 µm) and 0wt.%, 3wt.%, 6wt.% and 9wt.% of silicon carbide particles of size (< 25 µm) were fabricated using the stir casting method. Morphological analysis was done using scanning electron microscopy to access the distribution of reinforcement particles in the matrix alloy. Tensile, hardness, and impact strengths were increased with an increase in weight fraction of SiC reinforcement particles in the aluminium alloy, while the ductility was decreased. Pin-on-disc dry sliding wear test was carried out with 10, 20 and 30 N loads with a sliding speed of 10 m·s -1 for a constant time period of 20 min to predict the wear behaviour of the developed composites. Worn surfaces of the wear-tested specimens and fracture morphology structure of the tensile-tested specimens were analysed. Results show that the composites reinforced with sugarcane bagasse ash and silicon carbide particles exhibit superior wear resistance.

show abstract

Residual stress generation in metal matrix composites after cooling

Cited by 17 publications

References 31 publications

Issues in Metal Matrix Composites Fabricated by Laser Powder Bed Fusion Technique: A Review

Issues in Metal Matrix Composites Fabricated by Laser Powder Bed Fusion Technique: A Review

Optimization of selected casting parameters on the mechanical behaviour of Al 6061/glass powder composites

Investigations on tribo-mechanical behaviour of Al-Si10-Mg/sugarcane bagasse ash/SiC hybrid composites

Contact Info

Product

Resources

About