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51问答网 > 影响宏观拉伸断口形态的因素有哪些

影响宏观拉伸断口形态的因素有哪些

2025-03-14 23:02:35

推荐回答（2个）

回答1：

碳钢拉伸时发生颈缩，断口截面要小于实际截面，截面不平整，断口呈金属光泽。铸铁不会发生颈缩，断口截面比较平整，呈灰黑色。

回答2：

低碳钢拉伸时发生颈缩，断口截面要小于实际截面，截面不平整，断口呈金属光泽。铸铁不会发生颈缩，断口截面比较平整，呈灰黑色。

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