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  • Experimental Residual Stress Evaluation Of Hydraulic Expansion Transitions In Alloy 690 Steam Generator Tubing (.pdf)
    and improved joint. design and fabrication techniques. Alloy 690TT. tubing has demonstrated outstanding laboratory. performance in accelerated primary water. chemistries. Resistance to Secondary Water Stress. Corrosion Cracking (SWSCC) has been shown to be. generally superior to alternative materials
  • Fatigue Strength Restoration in Corrosion Pitted 4340 Alloy Steel via Low Plasticity Burnishing (.pdf)
    . 1.25 mm (0.05 in.). Corrosion damage from 100 and 500-hour salt. fog exposures reduced the 107-cycle fatigue. strength respectively by about 25 and 50 percent. relative to the as machined uncorroded fatigue. strength. LPB applied to the corroded surfaces. after superficial cleaning to remove loose
  • Five-fold Branched Si Particles Studied with Orientation Imaging Microscopy (.pdf)
    Many five-fold branched Si particles (Sip) were observed in Al-40wt%Si functionally graded materials (FGMs) produced by a single step laser process on cast Al-alloy substrate (reference is made to our recent publications [1,2]). The fascinating result is that the fivefold branched silicon particles
  • Computer Power User Article - Under Development
    at the electrically charged substrate. The alloy acted as a catalyst for a high-temp reaction that sparked the growth of nanowires or nanotubes from the substrate. Temps close to the reaction hit about 700 degrees C, but the temperature only a few micrometers away remained a comfortable 25 degrees C, or room
  • Die casting makes short work of small-lot parts
    1,200 F alloy goes through a small 2-in. plunger that fills the die in about 25 msec. The process, however, maintains a relatively low gate velocity, around 1,200 ips. Depending on the type of shield, shot sizes range from 4 oz to about a pound. "We typically run at a conservative speed of 70
  • Copper-jacketed germ buster
    in a battle against certain superbugs and other bacteria. Research by Bill Keevil and his team at University of Southhampton in the U.K. examined survival rates of various bacteria dried on the surfaces of 25 copper (Cu) alloys and other materials including polyethylene (PE), 304 stainless steel
    009;While MIM is certainly a new technology when compared with traditional metalworking processes, it has been a commercial reality for about 25 years. During that time, the technology has spawned an industry that is now international in scope. The Metal Injection Molding Association (MIMA
  • 2001 Ford Focus SE
    on the European Focus, 16-in. machined-alloy wheels, black body accents and ground effects, fog lights, rear spoiler, and a six-disc CD changer. For excellent ride and handling, Advance Trac (a $1,225 option) zeroes in on vehicle stability and monitors cornering, steering angle, lateral acceleration

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