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对工业用铬青铜QCr0.5-0.2-0.1进行了超塑性压缩试验研究,测定了其超塑流变曲线、m值,考察了温度、应变速率对流变应力的影响以及超塑压缩变形后的显微组织。结果表明,在740~820℃,应变速率1.67×10-4~1.33×10-3S-1的范围内该合金具有较好的超塑性,为其超塑成形工艺提供了试验依据
The superplastic compression test of industrial chrome bronze QCr0.5-0.2-0.1 was carried out. The superplastic rheological curve and m value were measured. The influence of temperature and strain rate on the flow stress and superplasticity Compress the deformed microstructure. The results show that the alloy has better superplasticity in the range of 740 ~ 820 ℃ and strain rate of 1.67 × 10-4 ~ 1.33 × 10-3S-1, providing experimental basis for the superplastic forming process