A new type of solder was fabricated by adding microelements into tin-bismuth series solder and then being rapid cooled.The microstructure and properties were investigated. 摘要在锡铋系焊料中加入微量元素，通过快速冷却制成新的焊料，并对其组织与性能进行了研究。
These two constituents form a eutectoid structure known as pearlite when the steel is cooled slowly enough to reach equilibrium, but by rapid cooling the steel is hardened. 当钢材冷却得足够缓慢而达到平衡状态时，这两种结构会形成一种共析结构，称为珠光体，但如果快速冷却，钢材将被硬化。
