acicular martensite

基本解釋

Mainly its metallographic structure consists of acicular ferrite and martensite.
鋼的組織主要由針狀鐵素體和馬氏體兩相組成。
The results showed that the microstructure of the steel was mainly composed of fine island-like martensite and acicular ferrite, with a 27.6% of martensite volume fraction.
結果表明：試驗鋼的組織由細小島狀馬氏體與針狀鐵素體為主構成，馬氏體體積分數為27．6%。
The existence and amount of small isolated martensite between the acicular ferrite play an important role in determining the tensile strength and low temperature impact toughness of the steels.
其中針狀鐵素體之間細小的馬氏體的存在與數量對鋼的抗拉強度和低溫沖擊韌性起關鍵作用。