Table 1 Analysis results of steel sword samples.
From: Ironmaking and steelmaking process research on Chinese long ring pommel Dao in Han dynasty
Original sample length/cm | Metallographic organization | Ironmaking & steelmaking method | Processing method | Period | |
|---|---|---|---|---|---|
Shizishan Chu Principality Han tomb | 97, 98 | Multiple materials are superimposed, having some layers, the middle part is pearlite + ferrite, and the carbon content is 0.5–0.6% | Direct reduction of iron ores production, Cast iron-puddling joint steel | Direct reduction of iron ores products and puddling steel products are folded and forged together +surface carburizing | 175BC- 154BC |
No. 1 Han tomb in Mancheng | 67 | Inside part has some layers, the metallographic organization is pearlite, [C] content is 0.1% at low carbon, [C] content is 0.4% at high carbon; Surface had quenched martensitic, [C] content is 0.6% | Direct reduction of iron ores production | Direct reduction of iron ores products are folded and forged + solid carburizing, quenching process | 113BC |
Nanyue Principality Han tomb | 33, 32 100–146 | Inside part has some layers, the metallographic organization is pearlite + ferrite, [C]content is 0.3–0.4%. Surface had pearlite + quenched martensitic, [C] content is 0.6% | Cast iron-puddling joint steel process | puddling steel products are folded and forged + solid carburizing, quenching process | 122BC |
Haihun Principality Han tomb | 95 | Inside part has some layers, the metallographic organization is pearlite, [C]content is 0.8%, Surface had pearlite + cementite, [C] content is 1.0%。 | Cast iron-puddling joint steel process | puddling steel products are folded and forged | 59BC |
