Yongjoon Kang, Seung-Gun Lee, G. Kim, Sang-hoon Lee, Sangwoo Song, Sung-Sik Kang
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引用次数: 0
Abstract
The effect of simulated post-weld heat treatment (PWHT) on the mechanical properties and microstructure of P-No. 1 materials was investigated and the suitability of the exemption requirements of simulated PWHT as specified in ASME Section III Division 1 Subsection NX-2211 was evaluated. SA-516 Gr. 60 and 70 carbon steel plates and SA-106 Gr. B carbon steel pipe were employed, and the materials were subjected to the simulated PWHT with holding temperatures of 610, 650, 690, and 730 °C for 8 hours. Both the tensile strength and lateral expansion of the materials tested in this study showed a tendency to decrease with increasing holding temperature of the simulated PWHT. In some cases, the materials after the simulated PWHT cannot satisfy those mechanical requirements.
研究了模拟焊后热处理(PWHT)对P-No合金力学性能和组织的影响。对1种材料进行了调查，并评估了ASME Section III Division 1小节NX-2211中规定的模拟PWHT豁免要求的适用性。采用SA-516 Gr. 60和70碳钢板和SA-106 Gr. B碳钢管，分别在610、650、690和730℃的温度下进行8小时的模拟PWHT。随着模拟PWHT保温温度的升高，材料的抗拉强度和横向膨胀率均呈下降趋势。在某些情况下，模拟PWHT后的材料不能满足这些力学要求。
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