... partial transient liquid phase diffusion bonding. Diffusion of Fe, Cr, Ni, and Zr has been investigated by scanning electron microscopy examinations and energy dispersive spectroscopy elemental analyses. Results showed that control of heating and cooling rate and 20 min soaking at 1223 K produces...

... deformation heating magnesium alloys mechanical strength riveting sheet metal processing Automotive manufacturers are facing challenges from government agencies and consumers to produce safer and more durable vehicles while improving fuel economy and emission standards. Therefore, lightweight...

... and reaches a maximum just after the cutting. In contrast, in down milling, the temperature increases immediately after cutting starts; it reaches a maximum and then begins to decrease during cutting. This suggests that the thermal impact to the cutting tool during heating is larger in down milling than in up...

... without heating the metal above its maximum operating temperature range. The research herein extends these findings by examining the effect of electrical pulsing on 5052 and 5083 aluminum alloys. Two different parameter sets were used while pulsing three different heat-treatments (as-is, 398 ° C , and 510...

...Young-Bum Kim; Jung-Seo Park; Jong-Gye Shin; Chung-Min Hyun; Kwang-Hee Ko Thermal forming is a method to form a curved plate by inducing local shrinkage and angular distortion through heating and cooling. In this approach, two different methods are available: line heating and triangle heating...

... stages on the forces and accuracy of the micromachined feature. The model combines an existing slip-line field based force model with a finite element based thermal model of laser heating and a constitutive material flow stress model to account for thermal softening. Experiments are carried out on H-13...

...K. Malukhin; K. F. Ehmann Shape memory alloys (SMAs) change their crystallographic structure and shape during heating/cooling and, as a consequence, their electrical resistance also changes. This allows the determination of the location of a SMA-based structure in space without separate sensors...

... deposited on commercial grade titanium alloy (Ti6Al4V) as a coating perform and bonded using a transient laser heating process. The coating was characterized for its surface morphology, particle size, and adhesion, and analyzed for its chemical compositions and phases. Results have shown the potential...

...Shakeel Safdar; Lin Li; M. A. Sheikh; Zhu Liu The effect of transformation hardening depends upon both heating and cooling rates. It is desirable to have a slow heating rate and a rapid cooling rate to achieve full transformation. To date laser transformation hardening has been carried out using...

...Jin Cheng; Y. Lawrence Yao Extensive efforts have been made in analyzing and predicting laser forming processes of sheet metal. Process design, on the other hand, is concerned with determination of laser scanning paths and laser heat condition given a desired shape. This paper presents an approach...

...Jong Gye Shin, Mem. ASME, Associate Professor,; Jong Hun Woo, Graduate Student, Line heating (LH) is a method of forming curved thick plates. Residual deformation of a steel plate is obtained by applying heat to the plate. Heat transfer analysis between a torch and the steel plate is essential...