Intermediate temperature embrittlement and its restraint in Ni-Cu-Al alloy ingot

被引：0

作者：

Mori, Takanobu ^{[1
]}

Yanai, Yoshimi ^{[1
]}

机构：

[1] Materials Res. Lab., Hitachi, Ltd., Omika-cho, Hitachi

来源：

Zairyo/Journal of the Society of Materials Science, Japan | 2009年 / 58卷 / 03期

关键词：

Cracking; Intermediate temperature embrittlement; Ni-cu-al alloy; Superconducting generator;

D O I：

10.2472/jsms.58.225

中图分类号：

学科分类号：

摘要：

Intermediate temperature embrittlement and its restraint were studied about Ni-Cu-Al alloy ingot for single layer warm damper of superconducting generator. Cracking of Ni-Cu-Al alloy ingot occurred when the ingot was given homogenization heat treatment. It is supposed that the cracking has close relationship to intermediate temperature embrittlement of the Ni-Cu-Al alloy ingot It was found that increase of Cu, Al, Ti or C promotes the intermediate temperature embrittlement and reduces elongation at 625°C in Ni-Cu-Al alloy ingot. However addition of Zr or B restrains the intermediate temperature embrittlement and increases elongation at 625°C in Ni-Cu-Al alloy ingot. Electro-slag remelted ingot of Ni-12.2%Cu4.15%Al-0.36%Ti-0.15%C alloy which is added 0.039%Zr weighed 21 tons and it was given homogenization heat treatment, however cracking of the ingot did not occur. © 2009 The Society of Materials Science. Japan.

引用

页码：225 / 228

页数：3