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In the mentioned composition (Direct Metal 50) Nickel is the structural material and bronze is the binder material.
Laser sintered materials are always porous and in addition a study conducted states that the porosity of material fabricated by DMLS is near 30%.
Upendra Sravan: Functional Testing of Direct Metal Laser Sintered (DMLS) Components for Automotive Application, Advanced Materials Research, Vols. 383-390, (2012), p. 6242-6246
Pohl: On the development of direct metal laser sintering for rapid tooling, Journal of Material Processing Technology, Vol. 141 (2003), p. 319-328
Haider: Laser Sintered rapid tools with improved surface finish and strength using plating technology, Journal of Materials Processing Technology, Vol. 121 (2002), p. 318-322

Investigation of stress field and wear depth of Cr-Mo-Cu alloy cast iron with nano-additives under abrasive wear Chaohui WANG1,2, You WANG2,*, Zhaoyi PAN2, Xiaohua GU1, Shengxiao LI1 1 School of Materials Science and Engineering, Qiqihar University, Qiqihar 161006, PR China 2 Laboratory of Nano Surface Engineering, Department of Materials Science, Harbin Institute of Technology, Harbin 150001, PR China (*Corresponding author.
Address: Laboratory of nano surface engineering, Department of Materials Science, Harbin Institute of Technology, Harbin 150001, PR China.
Materials properties.
The substrate material was considered to bilinear hardening materials comprising of elastic modulus and tangent modulus.
Materials properties used in finite element simulation were summarized in the Table 1.

Introduction Metal materials including stainless steel, titanium alloy and cobalt-chromium-based alloy can keep stable structure for a long period in human body due to their good corrosion resistance properties; they have been widely used for implantation into human body as biomedical materials in clinic, such as artificial arthrosis, artificial tooth, oral cavity implanting materials and artificial heart valve.
But disadvantages also exist for these permanently implanted metal materials.
Zeng: Transactions of Materials and Heat Treatment Vol. 30 (2009), p. 114 [5] Z.J.
Zhang, et al: Rare Metal Materials and Engineering Vol. 37 (2008), p. 1225 (In Chinese) [8] Z.M.
Zheng: Journal of Shenyang Normal University(Natural Science) Vol. 22 (2004), p.117 (In Chinese) [11] R.C.

Other parts for material properties: 45steel,density is 7.85E-006Kg/mm3, elastic modulus is 2.1E+005Mpa, Poisson’s ratio is 0.31.
Acknowledgement Project supported by the Natural Science Foundation of Hunan Province, China(10JJ9005).
Journal of Machine Design. 27(2010) 58-60
Journal of Machine Design.21(2010) 24-26
Journal of Mechanical Transmission.10(2010) 31-35

So a critical stress σf is defined that when the applied stress is less than it, the creep fracture will not occur, and when the applied stress is greater than it, the creep deformation will continue until the creep fracture (Curve 2, dashed line).This critical stress is called the long-term strength of materials [2].
(20) It can be seen that the whole creep process of materials is expressed by the model.
Journal of hydraulic engineering, (1) (1985),p.55-72
Journal of hydraulic engineering, (1)( 1985), p.29-37
Chinese Journal of Rock Mechanics and Engineering, 24 (2) (2005)， p.212-216.

The corrugated web rail is one important way to improve the economic properties of classical rail, and it has great significance on the economy and science.
Hot rolling technique and profile design of tooth shape rolls-Development and research on H-beam with wholly corrugated web(WCW)(1).Journal of Materials Processing Technology, 2000,101 (1-3):111-115
Buckling strength analysis of the web of WCW H-beam Development and research on H-beam with wholly corrugated web(WCW)(2).Journal of Materials Processing Technology,2000,101 (1-3):116-119
Journal of Yanshan University.2003,27(3):278-282
Numerical simulation and experimental study on corrugated waist rail with universal rolling .Journal of Plasticity Engineering. 2009,16(1):120-124.

Materials and Methods All chemicals were of analytical (AR) grade and were used without any further purification.
It is sensitive to completely crystalline as well as to amorphous states of materials.
While G band is due to E2gvibrations seen around 1580 cm-1 for carbon related materials.
Lim, and S.W .Rhee ,Improving the functionality of carbon nanodots: doping and surface functionalization ,Journal of Materials Chemistry A, 4, 11582–11603.(2016) [8] D.
Kim, Recent developments in carbon dots: a biomedical application perspective, Journal of Materials Chemistry B, 11, 3038-3053.(2023) [16] G.

Wuhan: wuhan university of science and technology press, 2010, 103-105.
Journal of mechanical engineering materials, 2006, 30(6):87-90.
Journal of mechanical engineering materials, 2004, 28(12):46-48.
Journal of functional materials, 2008, 39(4):690-691.
Research on electroforming superfine crystal materials microstructure [J].

Self-propagating High-temperature Synthesis(SHS) is a method of synthesizing materials making the use of the high heat released by the reaction of SHS.
Materials and Investigation Methods Experimental Materials.
The self-propagating spraying materials are Fe-based self-fluxing alloy powders and Fe-based self-fluxing alloy powders with 0.2% and 0.5% RE.
Journal of Thermal Science Vol.02(2005)
(In Chinese) [3] L.Liu, Q.J.Xue and H.W.Liu: An Active Mechanism for the Reactive Barrier of a Thermitebased SHS Process. , Journal of Inorganic Materials Vol.04(1996).

China 2International Centre for Materials Physics, Chinese Academy of Sciences, Shenyang 110016, P.R.
Spaeth: Journal of Physics - Condens.
Spaeth: Journal of Physics - Condens.
Reddy: Journal of Chemical Physics, 62 (1975) 4366 [8] A.
Dong: Journal of Magnetism and Magnetic Materials, 301 (2006) 67 [15] J.