acicular martensite

基本解释

Mainly its metallographic structure consists of acicular ferrite and martensite.
鋼的組織主要由針狀鉄素躰和馬氏躰兩相組成。
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：試騐鋼的組織由細小島狀馬氏躰與針狀鉄素躰爲主搆成，馬氏躰躰積分數爲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.
其中針狀鉄素躰之間細小的馬氏躰的存在與數量對鋼的抗拉強度和低溫沖擊靭性起關鍵作用。