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THE ASSESSMENT OF THE SATOH TEST AS A MEANS TO UNDERSTAND RESIDUAL STRESS EVOLUTION IN WELDS

机译：评估SATOH测试作为理解焊缝残留应力演化的手段

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摘要

The power generation industry needs an inexpensive means to understand differences in the evolution of welding residual stress in various high temperature alloys. The stress evolution can be affected by differences in thermal and mechanical properties between different alloys, as well as the presence of phase transformation. The Satoh test can be useful as a quick method to understand these differences. This study compares the evolution of stress for a wide range of high temperature alloys, including low and high alloy ferritic steel, stainless steel, and nickel alloys. Results demonstrate that ferritic alloys undergo phase transformations during cooling that drastically affect the evolution of residual stress. Austenitic alloys do not undergo a phase transformation and thus, accumulate a greater magnitude of residual stress when cooled to room temperature. Further analysis of the evolution of residual stress will be described in this paper.
机译：发电行业需要一种廉价的手段来了解各种高温合金中焊接残余应力的演变的差异。应力进化可以受到不同合金之间的热和机械性能的差异的影响，以及相变的存在。 SATOH测试可用作了解这些差异的快速方法。该研究比较了胁迫的演变，适用于各种高温合金，包括低合金铁素体钢，不锈钢和镍合金。结果表明铁素体合金在冷却过程中经历相变，这急剧影响残余应力的演变。奥氏体合金不会经历相变，因此在冷却至室温时积累更大的残余应力。本文将描述对残余应力的进一步分析。

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