COLD-WORKING AND HEAT-CRACKING IN Ni-Cu-BASE MONEL ALLOY K-500

来源期刊：中国有色金属学报(英文版)1998年第1期

论文作者：Yuan Chao Yang Hongcai Wang Zhixing Guo Jianting

文章页码：10 - 13

Key words：Monel alloy K-500;　cold-working;　heat cracking;　mechanical straightening

Abstract: Cold-working and its effect on heat cracking of Monel alloy K-500 were investigated. The results showed that cold-working hardening is limited for its strong effect on heat cracking, although Monel alloy K-500 has good cold workability. It was revealed that the main reasons of heat cracking, which initiates on the surface of the specimens and propagates intergranularly into the inner during aging, are the residual stress due to cold working, the heat stress due to aging and the surface brittleness occuring in early aging stage. It was proved that mechanical straightening is a beneficial and economical method to prevent Monel alloy K-500 from heat cracking.