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gang gui lv re han gui tou xia zuo shang sun fen xi ji yu fang dui ce
Author(s): 
Pages: 49-52
Year: Issue:  9
Journal: Welding Technology

Abstract: 钢轨铝热焊接头下颚裂纹产生的主要原因是焊缝金属收缩应力和钢轨的温度应力.当应力达到一定数值和比例,接头下颚处就出现应力集中峰值.车轮压过接头时,此处应力减小,从而产生疲劳应力循环,达到一定循环次数后产生开裂.
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