详述了新型工具钢d M7的成分设计和冶炼工艺，研究了它的热处理工艺，显微组织和力学性能。
Heat treatment, microstructure and mechanical properties of a new tool steel DM7 have been investigated, and its composition and metallurgy are detail discussed.
详述了新型工具钢d M7的成分设计和冶炼工艺，研究了它的热处理工艺，显微组织和力学性能。
Heat treatment, microstructure and mechanical properties of a new tool steel DM7 have been investigated, and its composition and metallurgy are detail discussed.
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