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Author: D. G. Howden Publisher: ISBN: Category : Languages : en Pages : 28
Book Description
This report summarizes progress in producing evaluating welding electrodes containing known amounts of rare earth metal for reducing hydrogen embrittlement in HY-130 steel welds. Prior work indicated rare earth silicides lowered the notch strength of welds. In this report studies directed toward the use of rare earth-nickel additions as a possible means of improving this property while retaining the desirable effects of the rare earths. Results to this time indicate notch strength lowering by the rare earth-nickel also. (Author).
Author: D. G. Howden Publisher: ISBN: Category : Languages : en Pages : 28
Book Description
This report summarizes progress in producing evaluating welding electrodes containing known amounts of rare earth metal for reducing hydrogen embrittlement in HY-130 steel welds. Prior work indicated rare earth silicides lowered the notch strength of welds. In this report studies directed toward the use of rare earth-nickel additions as a possible means of improving this property while retaining the desirable effects of the rare earths. Results to this time indicate notch strength lowering by the rare earth-nickel also. (Author).
Author: D. G. Howden Publisher: ISBN: Category : Languages : en Pages : 40
Book Description
This report summarizes the first years investigation directed at improving the mechanical properties of HY-140 weld metal by controlling hydrogen contamination. The addition of 0.2 percent hydride formers (Misch Metal) to weld metal has been shown to eliminate diffusible hydrogen at room temperature when the argon arc shielding gas was contaminated to a 5 percent level. The hydrides formed were stable on heating to a temperature of 760 C. Misch Metal at the 0.1 percent level in the filler wire was transferred to the weld metal with an efficiency of about 20 percent and no change in metal transfer characteristics was noted. Wire with greater than 0.1 percent Misch Metal proved difficult to fabricate with the techniques investigated. (Author).
Author: Russell H. Jones Publisher: CRC Press ISBN: 142000607X Category : Science Languages : en Pages : 354
Book Description
Hydrogen offers a promising alternative for supplying clean and sustainable energy to meet increasing demands worldwide. However, materials are key to transforming the technology into a viable industry. Materials for the Hydrogen Economy describes the technical challenges and the current efforts in developing materials possessing the properties req
Author: Publisher: ISBN: Category : Languages : en Pages : 0
Book Description
The cracking that may occur near the fusion zone of a steel weldment can often be attributed to the embrittlement of the microstructure by hydrogen induced during the welding process. The modified implant test was used in this case to evaluate the hydrogen-assisted cracking susceptibility of three separate heats of HY-130 steel, which included both cast and wrought plate. Welding was accomplished by the gas metal-arc spray transfer process. Cracking in all plates was observed to initiate and propagate in an area near the weld interface. The exact location of the fractures varied according to the amounts of diffusible hydrogen present and the type of material being tested. The effect of stress intensity together with hydrogen content on the mode of fracture present is also addressed in detail. (Author).
Author: Bradley J. Mason Publisher: ISBN: Category : Mechanical engineering Languages : en Pages : 108
Book Description
The cracking that may occur near the fusion zone of a steel weldment can often be attributed to the embrittlement of the microstructure by hydrogen induced during the welding process. The modified implant test was used in this case to evaluate the hydrogen-assisted cracking susceptibility of three separate heats of HY-130 steel, which included both cast and wrought plate. Welding was accomplished by the gas metal-arc spray transfer process. Cracking in all plates was observed to initiate and propagate in an area near the weld interface. The exact location of the fractures varied according to the amounts of diffusible hydrogen present and the type of material being tested. The effect of stress intensity together with hydrogen content on the mode of fracture present is also addressed in detail. (Author).
Author: D. G. Howden
Author: D. G. Howden
Author: D. G. Howden
Author: Alan J. Silvia
Author: Yoshikuni Tokunaga
Author: 
Author: Emmett I. Husa
Author: Russell H. Jones
Author: 
Author: 
Author: Bradley J. Mason