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Fracture analysis for Q235A steel rod
Author(s): 
Pages: 83-85
Year: Issue:  S1
Journal: Heat Treatment of Metals

Keyword:  拉杆 断裂 分析;
Abstract: 某公司生产的Q235A钢拉杆,在用手拉动时发生断裂,断裂部位位于热影响区。为查明其断裂的原因,采用化学成分分析、性能试验、金相检验及扫描电镜等手段进行综合分析。分析结果表明:断裂部位晶粒粗大,存在严重的魏氏组织,造成性能降低,在受较小应力下发生脆断。
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