Tensile Properties, Weldments

Tensile properties of specimens containing transverse EB weldments, post-weld aged at 525 °C (975 °F), 22 h, AC... 

Mechanical Properties. As noted previously, caution must be exercised when interpreting strain within weldments, due to the potential for strain localization in transverse tensile tests. However, yield and tensile strength results require no special consideration. Yield strength is often related to hardness, and based on the hardness curves typically obtained for 2024 Al, yield strength as well as fracture location should correlate with the lowest-hardness location in the W -hardness curve. Mechanical properties for 2024 Al have been reported in numerous publications as a function of FSW variables, including tool rotation rate, travel speed, and sheet thickness (Ref 2,4—8,11, 15). 

This paper summarizes the results of an evaluation of weldments in four candidate austenitic stainless alloys, AISI 310S, Kromarc 58, Pyromet 538, and A-286. Various combinations of welding processes, filler materials, and, in the case of Kromarc 58, pre- and postweld treatments are considered. Radiographic, metal-lographic, and fractographic examinations of all weldments were conducted. Mechanical (tensile) and fracture mechanics property data were determined with transverse weldment samples from room temperature to 4 K. 

Table II. Tensile and Charpy V-Notch Impact Properties of Cryogenic Steel Weldments ...

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