杜国维, 蔡家敏, 袁德生, 杨亚生. 铁铬铝合金裂纹的形成[J]. 工程科学学报, 1984, 6(2): 73-87. DOI: 10.13374/j.issn1001-053x.1984.02.006
引用本文: 杜国维, 蔡家敏, 袁德生, 杨亚生. 铁铬铝合金裂纹的形成[J]. 工程科学学报, 1984, 6(2): 73-87. DOI: 10.13374/j.issn1001-053x.1984.02.006
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Du Guowei, Cai Jiamin, Yuan Desheng, Yang Yasheng. Crack Formation of Fe-Cr-Al Alloy[J]. Chinese Journal of Engineering, 1984, 6(2): 73-87. DOI: 10.13374/j.issn1001-053x.1984.02.006
Citation: Du Guowei, Cai Jiamin, Yuan Desheng, Yang Yasheng. Crack Formation of Fe-Cr-Al Alloy[J]. Chinese Journal of Engineering, 1984, 6(2): 73-87. DOI: 10.13374/j.issn1001-053x.1984.02.006
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铁铬铝合金裂纹的形成

Crack Formation of Fe-Cr-Al Alloy

    摘要
  • 摘要: 应用声发射及电镜技术,研究了铁铬铝合金在生产中裂纹的形成条件。
    试验表明:沿拉拔方向导致裂纹的形成其主要原因是氢致滞后破坏;碳化物在晶界附近析出可降低合金的塑性;此外,合金的脆性转变温度较高,热应力也可以产生微裂纹。

     

    Abstract: Crack formation of Fe-Cr-Al alloy in wiredrawing process has been studied by means of acoustic emiassion and electron microscopy techniques.It is found that the major reason is due to Hydrogen-induced cracking in wiredrawing deriction. As Carbide precipitates at grain boundary, Ductility of alloy is low.In addition, brittleness tranoformation temperture of alloy is high, Crack may be induced by thermal stress.

     

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