Search results

Analyses of nugget and expulsion formation process during resistance spot welding between aluminum alloy and steel Nannan Wang a, Ranfeng Qiub , Fangfang Liuc , Man Zhang and Qingqing Xuan School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang, 471003, China ahnlywnn@163.com, bqiurf1221@163.com, c498074270@qq,com Keywords: Expulsion, Nugget formation, Resistance spot welding Abstract.
Introduction The need for joints between dissimilar materials often arises in automotive industries, because sound joints between dissimilar materials enable multi material design methodologies and low cost fabrication process to be employed.
From the point of view of material supply, aluminum alloy and steel are the most important construction materials for automotive structures; therefore, the availability of a sound joining technique between aluminum alloy and steel is indispensable.
[2] Farida Bouafia, Boualem Serier, Benali Boutabout, et al, Numerical analysis of the effect of pore on local stresses in spot welds, Computational Materials Science. 50(2011) 2517-2529
Zhang, Expulsion and its influence on weld quality, Welding Journal. 78 (1999) 373s-380s

In fact, this algebraic reasoning is at the heart of mathematics as a science of pattern and order.
[11] H L Ma (Chinese Journal of Science Education Vol. 9-4) 2001, pp. 375-399
[12] H L Ma (Chinese Journal of Science Education vol. 12-1) 2004, pp. 53-81
[13] H L Ma (Chinese Journal of Science Education vol. 15-4) 2007, pp. 387-416
[34] D B Wu and H L Ma (Applied Mechanics and Materials vols. 44-47) 2011, pp. 3922-3926

The paper makes a comparison of the compressive strength, splitting strength and impermeability test of concrete specimens with two different materials-XYPEX(waterproof material)and steel fiber, and also studies the effect of the two different materials on concrete compressive strength, splitting strength, impermeability and relevant laws, along with discussing the reaction mechanism because of the addition of this two materials.
Experiment Test Materials.
Yu: Journal of Northwest Hydroelectirc Power, 2005 No.4.
Bian: Science and Technology Innovation Herald, 2010 No.24, p.52.
Zhang: Science and Technology Information, 2009 No.23, p.41-43.

So it is necessary to simulate the microfracture generation in formation and fabricate microfracture cores in accord with the real reservoir stratum to provide experimental materials.
W.: submitted to Journal of Petroleum Technology (1971) [2] Hau, C.S.: submitted to Journal of Southwest Petroleum Institute (2003) [3] Fatt, Irving: submitted to AAPG Bulletin (1957) [4] Dobrynin V.: submitted to Old SPE Journal (1962) [5] Thomas, R., Ward, D.: submitted to Journal of Petroleum Technology (1972) [6] Davies, J.
W.: submitted to Old SPE Journal (1983) [9] Caruso, L., G.
Wilkens: submitted to International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts (1985) [10] Bernabe, Y.: submitted to International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts (1986) [11] Warpinski, N.
F.: submitted to International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts (1978)

Polyol can be synthesized or extracted from natural materials such as oils, plants or wood [1].
PU foam materials are popular type of thermosetting resin used as core for fabricated sandwich composites.
Tanoglu : Usak University Journal of Material Sciences 1 (2012), p. 59-70 [4] L.
Jerro : Materials Science and Engineering A 417 (2006), p. 249-258 [8] K.S.
Adam : Advanced Materials Research Vol. 795 (2013), p. 526-529

The alloys are multi-functional materials, which have both the ferromagnetic property and shape memory property.
Introduction Considerable attentions have being given to materials called intelligent material.
Enokizono et al., Magnetic properties of iron-based ferromagnetic shape-memory ribbon produced by melt-spinning technique, Journal of Magnetism and Magnetic Materials, 304, pp. 516-518 (2006)
Enokizono, Magnetic properties of Fe-Cr-Mn-Si-Base ferromagnetic shape memory ribbons, Journal of Magnetism and Magnetic Materials, 310, pp. 2776-2778 (2007)
Kanada, Development of iron-based ferromagnetic shape memory alloys by means of melt spinning technique, Journal of Advanced Science, Vol. 18, pp. 70-73 (2006)

Materials and methods The polymers used for this study are the polypropylene, the polyethylene glycol and the stearic acid [8].
Loh, Metal Injection Moulding: effects of the vinyl acetate content on binder behavior, Journal of Materials Processing Technology 67 (1997) 120-125
Tuc, Investigation of Properties of Powder Injection-Molded Steatites, Journal of Materials Engineering and Performance 21 (2011) 358–365
Stampino, Thermal evolution of PEG-based and Brij-based hybrid organo-inorganic materials.
Ozone degradation of Polyethylene Glycol in water, Journal of applied polymer science 20 (1976) 93-103

Experimental apparatus and materials.
Zhao, C Li: Materials Science and Engineering, A561 (2013)259-265
Okada: Materials Science Forum, 767 (2014) 166-170
Ishibashi: Materials Science Forum, 767 (2014) 171-176
Itoh: Materials Science Forum, 465-466 (2004) 265-270.

Acknowledgement Financial support from the National Natural Science Foundation of China (51363007), the Science Funds of Natural Science Foundation of Jiangxi Province (20132BAB206033), the Project of Jiangxi Youth Scientist (No. 20122BCB23031). and the Project of the Science Funds of Jiangxi Education Office (KJLD13070).
References [1] Han Zeng-hu, Tian Jia -wan, Dai Jia-wei, et al., Preparation and mechanical properties of magnetron sputtered CrNx thin films, Journal of Functional Materials, 2002 33(5):500-502
[5] B.J.Chen, X.W.Sun, B.K.Tay, Fabrication of ITO thin films by filtered cathodic vacuum arc deposition, Materials Science and Engineering B, 106(2004)300–304
Ren, et al., Synthesization of ZrN films by inductively coupled plasma assisted RF magnetron sputtering, Chinese Journal of Vacuum Science and Technology, 2007 27(6) 526-530
Song, et al., Reactive sputter deposition of nc-TiN/A-Si3N4 nanocomposite films in a magnetized inductively coupled plasma, Journal of Inorganic Materials, 2004 19(5)1080-1086.

These characteristics suggest that capacity coupled plasma has the potential of becoming a useful engineering material for material processing.
Lichtenberg, Principles of Plasma Discharges and Materials Processing, 2nd Edition, John Wiley & Sons, 2005
Nimura: Journal of Applied Physics Vol.54 (1983), p. 4879
Alves: Journal of Applied Physics Vol.102 (2007), p. 063305
Baravian: Journal of Applied Physics Vol.92 (2002), p. 710