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Evaluation of variation of tensile strength across 316LN stainless steel weld joint using automated ball indentation technique

机译：使用自动球压痕技术评估316LN不锈钢焊接接头的抗拉强度变化

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摘要

Tensile strength variation across 316LN stainless steel fusion welded joint comprising of base metal, deposited weld metal and heat affected zone (HAZ) has been evaluated by Automated Ball Indentation (ABI) technique. Automated Ball Indentation tests were conducted on the various zones of the steel weld joint at 300, 523 and 923 K. The flow curves obtained from ABI results were consistent with corresponding conventional uniaxial tensile test results. The HAZ exhibited higher tensile strength than the other regions of the steel weld joint at all investigated temperatures. The ratio of ultimate tensile strength to yield stress (YS), which represents the work hardening behaviour, increased with an increase in temperature for the base metal and HAZ; whereas it remained nearly the same for the weld metal.
机译：已经通过自动球压痕（ABI）技术评估了由母材，熔敷金属和热影响区（HAZ）组成的316LN不锈钢熔焊接头的拉伸强度变化。在300、523和923 K的钢焊缝的各个区域进行了自动球压痕测试。从ABI结果获得的流动曲线与相应的常规单轴拉伸试验结果一致。在所有研究温度下，热影响区均表现出比钢焊接接头其他区域更高的拉伸强度。代表抗拉强度的极限抗拉强度与屈服应力（YS）之比随母材和HAZ温度的升高而增加;而焊缝金属几乎保持不变。

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