胡丽华,张雷,许立宁,路民旭

• 1:北京科技大学材料科学与工程学院

摘要(Abstract)：

采用钨极氩孤弧焊(TIG)对Cr含量为1wt%～5wt%的低合金耐蚀管线钢进行焊接,研究Cr含量对焊接接头组织和力学性能的影响。结果表明,随着低合金耐蚀管线钢中Cr含量提高,粗晶热影响区晶粒尺寸变大,熔合区组织不均匀,易出现淬硬组织。随Cr含量提高,焊接接头的硬度呈上升趋势,冲击韧性呈下降趋势,尤其当Cr含量达5wt%时,硬度的提高和冲击韧性的下降尤为明显。低合金耐蚀管线钢的Cr含量不超过3wt%时,可得到硬度适中、韧性较高的焊接接头。

关键词(KeyWords)： 低合金耐蚀管线钢;Cr含量;焊接接头;组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 北京市自然基金重大项目(3080001)

作者(Author): 胡丽华,张雷,许立宁,路民旭

DOI: 10.13289/j.issn.1009-6264.2010.03.013

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