Figure 3. Typical microstructures observed at the die surface for three cases: (a) metallurgical bond resulting in soldering, and (b) absence of reaction between steel and aluminum.

Figure 3. Typical microstructures observed at the die surface for three cases: (a) metallurgical bond resulting in soldering, and (b) absence of reaction between steel and aluminum.

Figure 3. Typical microstructures observed at the die surface for three cases: (a) metallurgical bond resulting in soldering, and (b) absence of reaction between steel and aluminum.

Figure 3. Typical microstructures observed at the die surface for three cases: (a) metallurgical bond resulting in soldering, and (b) absence of reaction between steel and aluminum.