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摘要：
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对W6Mo5Cr4V2高速钢进行了组织超塑性研究。结果表明：经1040℃二次循环淬火处理后的W6Mo5Cr4V2高速钢，在变形温度为780℃～815℃、ε0=2．0～5．5×10-4s－1的试验条件下可实现超塑性；并在810℃、ε0=3．33×10－4s-1的最佳变形条件下，该钢的超塑延伸率可达192％，最大流变应力为58.2MPa，应变速率敏感性指数为0．27。
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In this paper, the structural superplasticity of the W6Mo5Cr4V2 high speed steel wasstudied. The results showed that after it was treated by 1040℃, 2 times circular quenching, the struc-tural superplasticity could be reached under conditions of (2. 0~5. 5) × 10-4s-1 and temperature of 780~815℃. The superplastic elongation of this steel could be reached 192%, the maximum flow stress wasonly 58. 2 MPa and strain rate sensistivity (m) was 0. 27 under the optimum conditions of tensile testwith ε0= 3. 33 × 10-4s -1, 810 ℃.
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基金项目：
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作者简介：
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参考文献：
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1安运铮.热处理工艺学.北京:机械工业出版社,1982:117～118
2约翰丁.伯克等著,王燕文等译.超细晶粒金属.北京:国防工业出版社,1982;123～152
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