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. 摘要在錫鉍系焊料中加入微量元素，通過快速冷卻製成新的焊料，並對其組織與性能進行了研究。
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. 當鋼材冷卻得足夠緩慢而達到平衡狀態時，這兩種結構會形成一種共析結構，稱為珠光體，但如果快速冷卻，鋼材將被硬化。
