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研究了国产新型冷作模具钢LD钢(7Cr7Mo3V2Si)经球化退火与循环退火后的超塑性压缩的力学特性.试验结果表明,经循环退火后的LD钢,其超塑性压缩性能优于球化退火,而且其最佳超塑性压缩的工艺参数也存在差异.
The mechanical properties of superplastic compression of the domestic new cold-work tool steel LD steel (7Cr7Mo3V2Si) after spheroidizing annealing and cyclic annealing were studied.The experimental results show that the superplasticity of LD steel after cyclic annealing is better than that of spheroidizing Annealing, and the best superplastic compression process parameters are also different.