Effect of grain size on residual stress in AlSi10MnMg alloy
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
The effect of varying the grain size on the residual stress in AlSi10MnMg alloys prepared at various cooling rates was examined. The specimens with different initial grain sizes were manufactured by high-pressure die casting (HPDC) and gravity die casting (GDC) under heat treatment at 500 °C for 2 h, followed by furnace cooling and water quenching to control the variables that could affect the residual stress or induce microstructural changes. The average grain size of the non-heat-treated as-cast HPDC speci-men was approximately 30 times smaller than that of the as-cast GDC specimen, and the residual stress of the large-grain GDC speci-men was approximately 20 MPa larger. The grain size of the furnace-cooled GDC specimen was approximately 50 times larger than the average grain size of the furnace-cooled HPDC specimen, and the largest difference in the residual stress was approximately 40 MPa. The average grain sizes of the water-quenched GDC and HPDC specimens differed by approximately ten-fold, where the residual stress in the water-quenched GDC specimen was approximately 8 MPa higher. The larger the grain size, the more easily the low-angle grain boundaries are penetrated by the potential. Therefore, a larger the grain size leads to better distribution of the low-angle grain systems; thus, numerous dislocations were distributed inside and around the grain. The grain boundaries and dislocations that were highly aggregated inside the grain influenced the residual stress.
Abstract
The effect of varying the grain size on the residual stress in AlSi10MnMg alloys prepared at various cooling rates was examined. The specimens with different initial grain sizes were manufactured by high-pressure die casting (HPDC) and gravity die casting (GDC) under heat treatment at 500 °C for 2 h, followed by furnace cooling and water quenching to control the variables that could affect the residual stress or induce microstructural changes. The average grain size of the non-heat-treated as-cast HPDC speci-men was approximately 30 times smaller than that of the as-cast GDC specimen, and the residual stress of the large-grain GDC speci-men was approximately 20 MPa larger. The grain size of the furnace-cooled GDC specimen was approximately 50 times larger than the average grain size of the furnace-cooled HPDC specimen, and the largest difference in the residual stress was approximately 40 MPa. The average grain sizes of the water-quenched GDC and HPDC specimens differed by approximately ten-fold, where the residual stress in the water-quenched GDC specimen was approximately 8 MPa higher. The larger the grain size, the more easily the low-angle grain boundaries are penetrated by the potential. Therefore, a larger the grain size leads to better distribution of the low-angle grain systems; thus, numerous dislocations were distributed inside and around the grain. The grain boundaries and dislocations that were highly aggregated inside the grain influenced the residual stress.
참고문헌 (29)
- P. D. Srivyas, "Application of hybrid alu-minum matrix composite in automotive industry", Materials Today: Proceedings, 18, pp.3189~3200 (2019)
- 김수배, "고압 다이캐스팅으로 제조된 Al-10Si-0.3Mg-0.6Mn 합금에서 blister 발생과 강도의 균형을 고려한 최적 열처리 공정 설계", 한국주조공학회지, 40(3), pp.66~75 (2020), 한국주조공학회
- M. Nikawa, "Evaluation of residual stress in die castings of Al-Si-Cu al-loy considering material composition change in thickness direction", International Journal of Automation Technol-ogy, 15(3), pp.359~365 (2021)
- Eunkyung Lee, "Effects of Cooling Rate on Precipitate Evolution and Residual Stresses in Al–Si–Mn–Mg Casting Alloy", Metals and Materials International, 24(4), pp.815~820 (2018), 대한금속·재료학회[DOI]
- G. S. Schajer, "Hole-drilling method for measuring residual stresses", Synthesis SEM Lectures on Experimental Mechanics, pp.14~17 (2018)
- H. Farhangi, "Effects of casting process variables on the residual stress in Ni-base superalloys", Journal of Materials Processing Technol-ogy, 153-154, pp.209~212 (2004)
- M. Wang, "Effects of annealing on the microstructure and mechanical properties of selective laser melted AlSi7Mg alloy", Materials Science and Engineering : A, 739, pp.463~472 (2019)
- S. S. Mohamed, "Generation and relaxation of residual stresses in automotive cylinder blocks, Advanced Applica-tions of Hydrogen and Engineering Systems in the Automo-tive Industry", 77~ (2020)
- 박태원, "용접에 의한 자동차용 Frame의 변형과 잔류 응력 분석", 한국자동차공학회 논문집, 19(5), pp.113~117 (2011), 한국자동차공학회
- D. Sediako, "Residual stress in au-tomotive powertrains: Methods and Analyses", Materials Science Forum, 1016, pp.1291~1298 (2021)
- A. Tabatabaeian, "Residual stress in engineering materials: a review", Advanced Engineering Materials, 24(3) (2021)
- 고대훈, "Al6061-T6 열처리 잔류응력의 유한요소해석 및 측정", 대한기계학회논문집 A, 35(7), pp.717~722 (2011), 대한기계학회
- N. Grillia, "Crystal plasticity model of residual stress in additive man-ufacturing", ~ (2021)
- Q. Wang, "Effects of Fe—Al intermetallic compounds on interfacial bonding of clad ma-terials", Transactions of Nonferrous Metals Society of China, 24(1), pp.279~284 (2014)
- R. Tian, "In-terfacial Intermetallic Compound Growth in Sn-3ag-0.5 Cu", Cu Solder Joints Induced by Stress Gradient at Cryo-genic Temperatures, 2019, pp.800, 180~190
- A. Niklas, "Effect of microstructure and casting defects on the mechanical properties of secondary AlSi10MnMg (Fe) test parts manufactured by vacuum as-sisted high pressure die casting technology", Materials To-day: Proceedings, 2(10), pp.4931~4938 (2015)
- C. Gu, "Predicting grain structure in high pressure die casting of aluminum alloys: A coupled cellular automaton and process model", Computational Materials Science, 161, pp.64~75 (2019)
- V. A. N. Righetti, "Non-destructive surface residual stress profiling by multireflection grazing incidence X-ray diffraction: A 7050 Al alloy study", Experimental Mechan-ics, 60, pp.475~480 (2020)
- C. E. Murray, "Applied and residual stress determination using X‐ray diffraction", Practical Re-sidual Stress Measurement Methods, pp.139~161 (2013)
- C. Gawert, "Automatic Determination of - 60 - Secondary Dendrite Arm Spacing in AlSi-Cast Microstruc-tures", Materials, 14(11), pp.2827~ (2021)
- M. Žbontar, "The influence of cool-ing rate on microstructure and mechanical properties of AlSi9Cu3", Metals, 11(2), pp.186~ (2021)
- 강문구, "파이프 인서트 기술을 적용한 알루미늄 고압주조 부품개발", 한국자동차공학회 논문집, 30(1), pp.45~50 (2022), 한국자동차공학회
- B. Kämpfe, "Investigation of residual stresses in microsys-tems using X-ray diffraction", Materials Science and Engi-neering : A, 288(2), pp.119~125 (2000)
- S. Chen, "The role of low angle grain boundary in deformation of titanium and its size effect", Scripta Ma-terialia, 163, pp.148~151 (2019)
- T. Le, "Effect of different casting techniques on the microstructure and mechanical properties of AE44-2 magnesium alloy", Mate-rials Research Express, 7(11) (2020)
- R. Liu, "Dislocation source and pile-up in a twinning-induced plasticity steel at high-cycle fatigue", Acta Metallurgica Sinica(English Let-ters), 34, pp.169~173 (2021)
- Y. F. Wang, "Heterostructure induced disper-sive shear bands in heterostructured Cu", pp.239~250 (2021), Jenny Stanford Publishing
- A. Dehghan-Manshadi, "Dependency of recrystallization mechanism to the initial grain size", Met-allurgical and Materials Transactions A, 39, pp.2830~2840 (2008)
- D. Zhang, "A high-strength low-rare-earth-alloyed magnesium alloy via traditional hot-extrusion", Journal of Alloys and Com-pounds, 810 (2019)