锰影响中锰钢<strong>TRIP</strong>效应的晶体塑性计算

锰影响中锰钢TRIP效应的晶体塑性计算

邓智文, 贾春妮, 刘腾远, 路轶, 郑成武, 王培, 李殿中

Crystal Plasticity Calculations on Influence of Mn-content on Transformation Induced Plasticity Effect for Medium-Mn Steels

DENG Zhiwen, JIA Chunni, LIU Tengyuan, LU Yi, ZHENG Chengwu, WANG Pei, LI Dianzhong

表4 用于晶体塑性计算的7Mn钢中奥氏体和铁素体的本构参数

Table 4 Constitutive parameters of 7Mn steel for the crystal plasticity model

Deformation mechanism	Parameters	fcc	bcc	Units
Slip	Magnitude of Burgers vector for each slip system	$2.56 \times 10^{- 10}$	$2.58 \times 10^{- 10}$	m
	Activation energy for glide for each slip system	$3.0 \times 10^{- 19}$	$2.5 \times 10^{- 19}$	J
	Adjustment parameter p for slip	0.5	0.4
	Adjustment parameter q for slip	1.3	1.3
	Strength due to elements in solid solution	$6.5 \times 10^{8}$	$2.8 \times 10^{8}$	Pa
Transformation	Magnitude of Burgers vector for each transformation system	$1.47 \times 10^{- 10}$	-	m
	Width of martensite nucleus	$1.27 \times 10^{- 7}$	-	m
	Adjustment parameter for transformation	3.0	-
	Martensite lamellar thickness for each transformation system	$1.0 \times 10^{- 7}$	-	m
	Stacking fault energy	10.0	-	mJ/m²