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Online since: August 2022
Authors: Muhammad bin Ahmed, Sumaira Naz, Tayyab Ali Khan, Hassan Waqas, Tanzeela Anis, Zahid Asghar, Syed Zahid Hussain, Fiaz Khan
This inherent anisotropy is a significant factor when graphite is used for load-bearing applications, for example in mechanical engineering.
Such high strength and high density graphite finds application in mechanical pressing dies, bearings, structural components of advanced nuclear reactors etc.
Forum 932 (2018) pp. 102–106 [4] A.
Konno, Advanced Materials Science and Engineering of Carbon, second ed., Elsevier, Inc., 2014
Such high strength and high density graphite finds application in mechanical pressing dies, bearings, structural components of advanced nuclear reactors etc.
Forum 932 (2018) pp. 102–106 [4] A.
Konno, Advanced Materials Science and Engineering of Carbon, second ed., Elsevier, Inc., 2014
Online since: January 2021
Authors: Sakari Pallaspuro, Antti Kaijalainen, David A. Porter, Vahid Javaheri, Jukka I. Kömi
Promising Bendability of a New As-Rolled Medium-Carbon, Low-Alloy Steel with Isothermal Upper and Lower Bainitic Microstructure
Vahid Javaheri1,a*, Antti Kaijalainen1,b, Sakari Pallaspuro1,c, David Porter1,d, Jukka Kömi1,e
1Centre for Advanced Steels Research, Materials and Mechanical Engineering, University of Oulu, P.O.
Introduction From an engineering point of view, formability of a newly developed steel grade is a key parameter for its successful application; especially in the pipe making industry as the most common production route for that is cold-forming the strips to a pipe shape and then welding the edges.
Kolednik, On the microstructure control of the bendability of advanced high strength steels, Mater.
Forum. 500–501 (2005) 387–394. doi:10.4028/www.scientific.net/MSF.500-501.387
Introduction From an engineering point of view, formability of a newly developed steel grade is a key parameter for its successful application; especially in the pipe making industry as the most common production route for that is cold-forming the strips to a pipe shape and then welding the edges.
Kolednik, On the microstructure control of the bendability of advanced high strength steels, Mater.
Forum. 500–501 (2005) 387–394. doi:10.4028/www.scientific.net/MSF.500-501.387
Online since: May 2014
Authors: Nilam S. Barekar, Sanjeev Das, Zhong Yun Fan
These potent MgO particles promote an advance of equiaxed solidification front rather than columnar ones (Fig. 3(c)).
The absence of centerline segregation in the case of MCTRC strips can be attributed to an equiaxed solidification front advancing from the surface to the centre of the strip.
Such an advancing equiaxed solidification front does not accumulate solute elements at the solidification front, and therefore does not cause centerline segregation.
[7] Sanjeev Das, Shouxun Ji, Omer El Fakir, Liliang Wang, John Dear, Jianguo Lin, Ian Stone, Geoff Scamans, Zhongyun Fan, Melt Conditioned Twin Roll Casting (MC-TRC) of Thin Mg-Alloy Strips for Direct Stamping of Mg Components, Materials Science Forum, 765 (2013) 170-174
Hunt, Steady state columnar and equiaxed growth of dendrites and eutectic, Materials Science and Engineering, 65 (1984) 75-83
The absence of centerline segregation in the case of MCTRC strips can be attributed to an equiaxed solidification front advancing from the surface to the centre of the strip.
Such an advancing equiaxed solidification front does not accumulate solute elements at the solidification front, and therefore does not cause centerline segregation.
[7] Sanjeev Das, Shouxun Ji, Omer El Fakir, Liliang Wang, John Dear, Jianguo Lin, Ian Stone, Geoff Scamans, Zhongyun Fan, Melt Conditioned Twin Roll Casting (MC-TRC) of Thin Mg-Alloy Strips for Direct Stamping of Mg Components, Materials Science Forum, 765 (2013) 170-174
Hunt, Steady state columnar and equiaxed growth of dendrites and eutectic, Materials Science and Engineering, 65 (1984) 75-83
Online since: December 2010
Authors: Konstantin V. Ivanov, Evgeny V. Naydenkin
Introduction
It is well known that ultrafine-grained (UFG) metals and alloys processed by severe plastic deformation exhibit advanced mechanical properties in comparison with coarse-grained counterparts, e.g. enhanced strength at ambient temperature and high strain rate or lowtemperature superplasticity at elevated temperatures [[] R.Z.
Forum Vols. 584-586 (2008), p. 741 ].
Scan 1 Scan 2 Scan 3 Scan 4 Local plastic strain nearby the scan 0 0 0.5 0.9 Number of grains/subgrains in the scan 1369 / 3083 1222 / 2757 702 / 1687 610 / 1494 Average grain/subgrain size, [mm] 2.4 / 1.8 2.5 / 1.9 3.2 / 2.3 3.2 / 2.5 Average grain/subgrain aspect ratio 0.71 / 0.75 0.74 / 0.75 0,73 / 0.75 0,72 / 0.73 Average grain/subgrain shape orientation, [°] 47 / 60 48 / 62 46 / 59 45 / 52 Fraction of high-angle grain boundaries 0.68 0.68 0.62 0.64 Fraction of twins: S3, 60° around <111> S9, 38.9° around <110> Total 0.003 0.001 0.004 0.001 0.002 0.003 0.001 0.002 0.003 0 0.002 0.002 Area fraction of coarse grains (lager than 6 mm) 0.28 0.25 0.50 0.42 Fig. 2 represents the engineering curves of plastic flow obtained for the UFG and recrystallized aluminum.
Forum Vols. 633-634 (2010), p. 165 ] gives the respective total elongation being 14%.
Engineering flow curves obtained for UFG (1) and recrystallized (2) aluminum.
Forum Vols. 584-586 (2008), p. 741 ].
Scan 1 Scan 2 Scan 3 Scan 4 Local plastic strain nearby the scan 0 0 0.5 0.9 Number of grains/subgrains in the scan 1369 / 3083 1222 / 2757 702 / 1687 610 / 1494 Average grain/subgrain size, [mm] 2.4 / 1.8 2.5 / 1.9 3.2 / 2.3 3.2 / 2.5 Average grain/subgrain aspect ratio 0.71 / 0.75 0.74 / 0.75 0,73 / 0.75 0,72 / 0.73 Average grain/subgrain shape orientation, [°] 47 / 60 48 / 62 46 / 59 45 / 52 Fraction of high-angle grain boundaries 0.68 0.68 0.62 0.64 Fraction of twins: S3, 60° around <111> S9, 38.9° around <110> Total 0.003 0.001 0.004 0.001 0.002 0.003 0.001 0.002 0.003 0 0.002 0.002 Area fraction of coarse grains (lager than 6 mm) 0.28 0.25 0.50 0.42 Fig. 2 represents the engineering curves of plastic flow obtained for the UFG and recrystallized aluminum.
Forum Vols. 633-634 (2010), p. 165 ] gives the respective total elongation being 14%.
Engineering flow curves obtained for UFG (1) and recrystallized (2) aluminum.
Online since: March 2008
Authors: André Rothkirch, Sabine Lenser
Imaging diffraction using Maxim at G3/Hasylab - spatial resolved strain
measurements on linear friction welded dissimilar materials
(AA7020-T6/Ti6AlV)
André Rothkirch1, a and Sabine Lenser2,b
1
Hamburger Synchrotronstrahlungslabor HASYLAB at Deutsches Elektronen-Synchrotron DESY,
Notkestraße 85, 22607 Hamburg, Germany
2
Clausthal University of Technology, Institute of Materials Science and Engineering, Outpost at
GKSS Research Centre, Ramanweg, Geb. 57, 21502 Geesthacht, Germany
a
andre.rothkirch@desy.de, bsabine.lenser@gkss.de
Keywords: X-ray imaging diffraction, Residual stress, friction welding of dissimilar materials.
This work was done in the framework of the 'Virtual Institute - Photon and Neutron Research on Advanced Engineering Materials (VI-PNAM)' funded by the Helmholtz Society.
Diogo, editors, 6th European Conference on Residual Stresses - Proceedings ECRS6, volume 404-407 of Material Science Forum, pages 25-28, Switzerland, 2002.
Materials Science Forum, 79-82:469-474, 1991
This work was done in the framework of the 'Virtual Institute - Photon and Neutron Research on Advanced Engineering Materials (VI-PNAM)' funded by the Helmholtz Society.
Diogo, editors, 6th European Conference on Residual Stresses - Proceedings ECRS6, volume 404-407 of Material Science Forum, pages 25-28, Switzerland, 2002.
Materials Science Forum, 79-82:469-474, 1991
Online since: August 2015
Authors: Gonasagren Govender, Heinrich Möller, Pfarelo Daswa
Acknowledgements
The Department of Science and Technology (DST) in South Africa is acknowledged for funding under the Advanced Metals Initiative Program.
Eberl, The effect of silver on microstructural evolution in two 2xxx series Al-alloys with a high Cu:Mg ratio during ageing to a T8 temper, Material Science and Engineering A 491 (2008) 214 – 223
Zeng, Enhanced mechanical properties in an Al-Cu-Mg-Ag alloy by duplex ageing, Materials Science and Engineering A 528 (2011) 8060 – 8064
Bes, Damage tolerance of an Al-Cu-Mg-Ag alloy (2139), Materials Science Forum, Vols. 519-521 (2006) pp603-608
Govender, Optimisation of the solution heat treatment of rheo-processed Al-Cu-Mg-(Ag) alloys A206 and A201, Materials Science Forum Vols. 618-619 (2009) pp 353-356
Eberl, The effect of silver on microstructural evolution in two 2xxx series Al-alloys with a high Cu:Mg ratio during ageing to a T8 temper, Material Science and Engineering A 491 (2008) 214 – 223
Zeng, Enhanced mechanical properties in an Al-Cu-Mg-Ag alloy by duplex ageing, Materials Science and Engineering A 528 (2011) 8060 – 8064
Bes, Damage tolerance of an Al-Cu-Mg-Ag alloy (2139), Materials Science Forum, Vols. 519-521 (2006) pp603-608
Govender, Optimisation of the solution heat treatment of rheo-processed Al-Cu-Mg-(Ag) alloys A206 and A201, Materials Science Forum Vols. 618-619 (2009) pp 353-356
Online since: April 2010
Authors: C.G. Lee, Toshitada Shimozaki, Takahisa Okino, O. Taguchi
Taguchi3, d
1 The Center for Instrumental Analysis, Kyushu Institute of Technology, Tobata
Kitakyushu 804-8550, Japan
2
Department of Applied Mathematics, Faculty of Engineering, Oita University,
Dannoharu, Oita 870-1192, Japan
3
School of Nano · Advanced Materials Engineering, Changwon National University,
Changwon, Gyeongnam 641-773, South Korea
a shimozak@kitcia.kyutech.ac.jp, b
okino@cc.oita-u.ac.jp,
c cglee@sarim.changwon.ac.kr
d
Taguchi@sarim.changwon.ac.kr
Keywords: Interdiffusion, Intrinsic diffusion, Multiple marker method, Numerical analysis, Lattice
formation
Abstract.
Forum Vol. 283-286 (2009), p. 394
Forum Vol. 194-199 (2001), p. 195
Forum Vol. 283-286 (2009), p. 394
Forum Vol. 194-199 (2001), p. 195
Online since: August 2014
Authors: Klaus Dilger, Thomas Nitschke-Pagel, Jonas Hensel
This material is widely used in many engineering disciplines for welded constructions.
(a) (b) Figure 2 (a) Macrograph of the weld; (b) Hardness distribution of the weld (HV1) Many engineering disciplines rely on fatigue strength evaluation based on nominal stresses.
E.g. [11] show that this effect should be considered in advanced fatigue design concepts.
Schönborn, Effects of Residual Stresses on the Fatigue Performance of Welded Steels with Longitudinal Stiffeners, Materials Science Forum, Vols. 768-769, pp. 636-643, 2013
Edwards, Influence of Residual Stress Redistribution on Fatigue Crack Growth and Damage Tolerant Design, Materials Science Forum, Vols. 524-525, pp. 363-372, 2006
(a) (b) Figure 2 (a) Macrograph of the weld; (b) Hardness distribution of the weld (HV1) Many engineering disciplines rely on fatigue strength evaluation based on nominal stresses.
E.g. [11] show that this effect should be considered in advanced fatigue design concepts.
Schönborn, Effects of Residual Stresses on the Fatigue Performance of Welded Steels with Longitudinal Stiffeners, Materials Science Forum, Vols. 768-769, pp. 636-643, 2013
Edwards, Influence of Residual Stress Redistribution on Fatigue Crack Growth and Damage Tolerant Design, Materials Science Forum, Vols. 524-525, pp. 363-372, 2006
Online since: October 2010
Authors: Xiao Cong He
FEA of Fatigue Behaviour of Adhesively Bonded Joints
Xiaocong He
Innovative Manufacturing Research Centre,Faculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming,650093, P.
Adhesive bonding is a high-speed fastening method which is suitable for joining advanced lightweight sheet materials that are hard to weld.
Introduction Due to the need to design lightweight structures and the increased use of lightweight materials in different industries, some joining techniques have drawn more attention in recent years because they can join advanced sheet materials that are hard to weld [1, 2].
Sancaktar: Proceedings of SPIE - The International Society for Optical Engineering, Vol.5288, (2003), p.745 [11] P.T.
Llanos: Annual Forum Proc - AHS Int, Vol.III, (2006), p.1479 [22].
Adhesive bonding is a high-speed fastening method which is suitable for joining advanced lightweight sheet materials that are hard to weld.
Introduction Due to the need to design lightweight structures and the increased use of lightweight materials in different industries, some joining techniques have drawn more attention in recent years because they can join advanced sheet materials that are hard to weld [1, 2].
Sancaktar: Proceedings of SPIE - The International Society for Optical Engineering, Vol.5288, (2003), p.745 [11] P.T.
Llanos: Annual Forum Proc - AHS Int, Vol.III, (2006), p.1479 [22].
Online since: May 2020
Authors: A.S. Kolomatsky, M.V. Marushko, L.A. Suleymanova
Introduction of the developed processing methods into the manufacturing process improves the technology of aerated concrete production and allows for a fabrication of the finest advanced heat insulating and structural and heat insulating products.
Marushko, Theoretical basis of formation highly organized porous structure of aerated concrete, Materials Science Forum. 945 (2019) 309-317
Lukuttsova, Energy efficient technologies of production and use non-autoclaved aerated concrete, International Journal of Applied Engineering Research. 10 (5) (2015) 12399-12406
Marushko, Theoretical basis of formation highly organized porous structure of aerated concrete, Materials Science Forum. 945 (2019) 309-317
Lukuttsova, Energy efficient technologies of production and use non-autoclaved aerated concrete, International Journal of Applied Engineering Research. 10 (5) (2015) 12399-12406