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首页> 外文会议>AIST steel properties amp; applications conference proceedings combined with MSamp;T' 10 materials science and technology 2010 >A Dislocation Substructural Consideration on Work-hardening and Resistance to SCC of Ni-based Alloys;
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A Dislocation Substructural Consideration on Work-hardening and Resistance to SCC of Ni-based Alloys;

机译：镍基合金的加工硬化和抗SCC位错的亚结构考虑；

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摘要

Effect of alloying elements on the work hardenability of Ni-based alloys and their susceptibility to stress corrosion cracking (SCC) in sour gas environments has been studied using the detailed TEM observations evaluating the stacking fault energy of the alloys and the slow strain rate test (SSRT) for SCC resistance. The elements such as Mo, W, N and Ni are found to lower the stacking fault energy of the alloy and thus to increase the work hardenability. N is found to be a most superior element which lowers the stacking fault energy to a great extent and therefore strengthens much the alloys in a small amount. The susceptibility to SCC of the alloys in the sour environments is found to be enhanced by the addition of N, which depends strongly on the dislocation substructure of the alloys. Reduction of P is found to improve the SCC resistance of the alloys mainly by changing the dislocation substructures from planar to cellular.
机译：通过使用详细的TEM观察评估合金的堆垛层错能并进行慢应变速率测试，研究了合金元素对Ni基合金的可加工性及其在酸性气体环境中对应力腐蚀开裂（SCC）的敏感性的影响（ SSRT）。已发现诸如Mo，W，N和Ni之类的元素会降低合金的堆垛层错能，从而提高加工硬化性。发现N是最优良的元素，其在很大程度上降低了堆垛层错能，因此少量地大量增强了合金。发现在酸性环境中合金对SCC的敏感性通过添加N得以增强，而N在很大程度上取决于合金的位错亚结构。发现减少P主要是通过将位错亚结构从平面改变为多孔来改善合金的抗SCC性能。

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