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2205雙相不銹鋼模擬焊接HAZ組織與性能
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TG401

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中國(guó)石油管力學(xué)和環(huán)境行為重點(diǎn)實(shí)驗(yàn)室基金項(xiàng)目（ZYT0404）資助


The Microstructure and Impact Toughness of Simulated Welding HAZ in 2205 Duplex Stainless Steel
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    摘要:

    采用熱模擬法研究了2205DSS焊接HAZ的組織與性能，探討了冷卻時(shí)間對(duì)模擬HAZ沖擊韌性的影響規(guī)律。結(jié)果表明：冷卻時(shí)間對(duì)組織及性能有很大的影響，隨冷卻時(shí)間的延長(zhǎng)，鐵素體含量減少，奧氏體含量增加，沖擊韌性增大：隨冷卻時(shí)間延長(zhǎng)，模擬組織顯微硬度降低，而且模擬組織中鐵素體的硬度低于奧氏體的硬度：固定冷卻時(shí)間t8／5時(shí)，隨冷卻時(shí)間t12／8的增加，沖擊韌性提高：固定冷卻時(shí)間t12／8時(shí)，隨冷卻時(shí)間t8／5的增加，沖擊韌性降低。

    Abstract:

    The microstructures and impact toughness of thermal simulated welding HAZ in 2205 duplex stainless steel were studied by means of thermal simulator and impact testing in the paper. The influences of cooling time on the impact toughness of thermal simulated HAZ were investigated also. The results show that the cooling time has strong effects on the impact toughness of the thermal simulated HAZ, that the ferrite content and micro hardness decreases as increasing of cooling time, that the microhardness in ferrite is lower than that than in austenite, that impact toughness increases with the increase of the cooling time t12/8 for a certain cooling time t8/5, and that impact toughness decreases with the increase of the cooling time t8/5 for a certain cooling time t12/8.

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張建勛 李慶琰 李為衛(wèi) 張?zhí)锖?2205雙相不銹鋼模擬焊接HAZ組織與性能[J].稀有金屬材料與工程,2006,35(11):1822~1825.[Zhang Jianxun, Li Qingyan, Li Weiwei, Zhang Tianhong. The Microstructure and Impact Toughness of Simulated Welding HAZ in 2205 Duplex Stainless Steel[J]. Rare Metal Materials and Engineering,2006,35(11):1822~1825.]
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  • 收稿日期:2005-11-18
  • 最后修改日期:2006-08-18
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