Effect of SiC content and interlayer difference on microstructural characterization and mechanical properties of functionally graded 6061Al/SiCp composites
“…Similar SiC content was used in [93,224], and the obtained tensile strengths of the FGCMs were also similar. The range of SiC content in [146] was significantly higher, and the resulting tensile strength distribution was also much broader in this FGCM.…”
Section: Hardnessmentioning
confidence: 81%
“…Similar SiC content was used in [93,224], and the obtained tensile strengths of the FGCMs were also similar. The range of SiC content in [146] was significantly higher, and the resulting tensile strength distribution was also much broader in this FGCM. Figure 57. Summary plot showing the distribution of tensile strength in the FGCMs reviewed in this work. Figure 58. SEM fractographs of different regions of the tensile fractured Al6063/Al–3 vol.-% CNT/Al3003 FGCM surface – (a) Al6063, (b) macro-image showing all three regions, (c) Al3003, (d) an interlayer region between Al6063 and Al–3 vol.-% CNT, (e) Al–3 vol.-% CNT region, and (f) an interlayer region between Al3003 and Al-3 vol.-% CNT [238] (cited image has been reproduced with due permission from the publisher).…”
Section: Properties Of Fgcmsmentioning
confidence: 93%
“…The bottom layer of the FGCM was made up of the metallic matrix, and the subsequent four layers had reinforcement contents of 1, 3, 5 and 7 vol.-%, respectively. Three-layered 6061Al–SiC p FGCMs with maximum SiC content of 30 wt-% were fabricated by Wu et al [146]. Nine different variants with different layer compositions but constant interlayer composition gradients were fabricated.…”
Section: Manufacturing Methods Of Fgcmsmentioning
confidence: 99%
“…The marginally higher tensile strength reported in [21] could possibly be attributed to higher Si and Mg contents in the Al alloy, resulting in the precipitation of more Mg 2 Si precipitates during heat treatment, causing further strengthening. Lastly, three research papers [93,146,224] studied the tensile properties of Al-SiC FGCMs. Three different processing routes were employed for fabricating the FGCMs (centrifugal casting, hot pressing, and friction stir processing, respectively).…”
Monolithic components are often insufficient when a combination of conflicting properties, or a variation in properties at different regions within a material is required. Functionally graded composite materials (FGCM) are a relatively new class of materials with a systematic variation of the composition, microstructure, and properties along one direction. The graded structure offers tailorable property combinations not achievable with monolithic composites and significant recent research has been carried out on their development. An effort has been made in this article to review the latest developments on bulk FGCMs since 2015. The different processing techniques used for their fabrication have been discussed, highlighting their advantages, limitations, and recent advancements pertaining to FGCM fabrication. Various physical, mechanical, and thermal properties of FGCMs have been treated separately, and wherever possible, summary plots combining data from various research articles have been developed. Finally, potential areas for directing future FGCM research have been identified.
“…Similar SiC content was used in [93,224], and the obtained tensile strengths of the FGCMs were also similar. The range of SiC content in [146] was significantly higher, and the resulting tensile strength distribution was also much broader in this FGCM.…”
Section: Hardnessmentioning
confidence: 81%
“…Similar SiC content was used in [93,224], and the obtained tensile strengths of the FGCMs were also similar. The range of SiC content in [146] was significantly higher, and the resulting tensile strength distribution was also much broader in this FGCM. Figure 57. Summary plot showing the distribution of tensile strength in the FGCMs reviewed in this work. Figure 58. SEM fractographs of different regions of the tensile fractured Al6063/Al–3 vol.-% CNT/Al3003 FGCM surface – (a) Al6063, (b) macro-image showing all three regions, (c) Al3003, (d) an interlayer region between Al6063 and Al–3 vol.-% CNT, (e) Al–3 vol.-% CNT region, and (f) an interlayer region between Al3003 and Al-3 vol.-% CNT [238] (cited image has been reproduced with due permission from the publisher).…”
Section: Properties Of Fgcmsmentioning
confidence: 93%
“…The bottom layer of the FGCM was made up of the metallic matrix, and the subsequent four layers had reinforcement contents of 1, 3, 5 and 7 vol.-%, respectively. Three-layered 6061Al–SiC p FGCMs with maximum SiC content of 30 wt-% were fabricated by Wu et al [146]. Nine different variants with different layer compositions but constant interlayer composition gradients were fabricated.…”
Section: Manufacturing Methods Of Fgcmsmentioning
confidence: 99%
“…The marginally higher tensile strength reported in [21] could possibly be attributed to higher Si and Mg contents in the Al alloy, resulting in the precipitation of more Mg 2 Si precipitates during heat treatment, causing further strengthening. Lastly, three research papers [93,146,224] studied the tensile properties of Al-SiC FGCMs. Three different processing routes were employed for fabricating the FGCMs (centrifugal casting, hot pressing, and friction stir processing, respectively).…”
Monolithic components are often insufficient when a combination of conflicting properties, or a variation in properties at different regions within a material is required. Functionally graded composite materials (FGCM) are a relatively new class of materials with a systematic variation of the composition, microstructure, and properties along one direction. The graded structure offers tailorable property combinations not achievable with monolithic composites and significant recent research has been carried out on their development. An effort has been made in this article to review the latest developments on bulk FGCMs since 2015. The different processing techniques used for their fabrication have been discussed, highlighting their advantages, limitations, and recent advancements pertaining to FGCM fabrication. Various physical, mechanical, and thermal properties of FGCMs have been treated separately, and wherever possible, summary plots combining data from various research articles have been developed. Finally, potential areas for directing future FGCM research have been identified.
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