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{
"metadata": {
"name": "CH9"
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Chapter 9: Phase Diagram"
]
},
{
"cell_type": "heading",
"level": 3,
"metadata": {},
"source": [
"Example 9.3 Page No 273"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"C1=40.0 # Overall alloy composition\n",
"Cb=98.0\n",
"Ca=10.0\n",
"\n",
"Wa=(Cb-C1)/(Cb-Ca)\n",
"Wb=(C1-Ca)/(Cb-Ca)\n",
"d_Sn=7.24 # in g/cm**3 density of tin\n",
"d_Pb=11.23 # in g/cm**3 density of lead\n",
"Ca_Sn=10.0\n",
"Ca_Pb=90.0\n",
"Cb_Sn=98.0\n",
"Cb_Pb=2.0\n",
"d_a=100/((Ca_Sn/d_Sn)+(Ca_Pb/d_Pb))\n",
"d_b=100/((Cb_Sn/d_Sn)+(Cb_Pb/d_Pb))\n",
"Va=Wa/(d_a*((Wa/d_a)+(Wb/d_b)))\n",
"Vb=Wb/(d_b*((Wa/d_a)+(Wb/d_b)))\n",
"\n",
"\n",
"print\"Mass fractions for alpha and beta phases are respectively\",round(Wa,2),\"and\",round(Wb,2)\n",
"print\"Density of alpha phase is \",round(d_a,2),\"g/cm**3\"\n",
"print\"Density of beta phase is \",round(d_b,2),\"g/cm**3\"\n",
"print\"Volume fraction of alpha phase \",round(Va,2),\"g/cm**3\"\n",
"print\"Volume fraction of beta phase \",round(Vb,2)\n",
"\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Mass fractions for alpha and beta phases are respectively 0.66 and 0.34\n",
"Density of alpha phase is 10.64 g/cm**3\n",
"Density of beta phase is 7.29 g/cm**3\n",
"Volume fraction of alpha phase 0.57 g/cm**3\n",
"Volume fraction of beta phase 0.43\n"
]
}
],
"prompt_number": 7
},
{
"cell_type": "heading",
"level": 3,
"metadata": {},
"source": [
"Example 9.4 Page No 299"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"C0=0.35\n",
"Ca=0.022\n",
"C_Fe3C=6.7\n",
"\n",
"Wa=(C_Fe3C-C0)/(C_Fe3C-Ca)\n",
"W_Fe3C=(C0-Ca)/(C_Fe3C-Ca)\n",
"C_p=0.76\n",
"Wp=(C0-Ca)/(C_p-Ca)\n",
"W_a=(C_p-C0)/(C_p-Ca)\n",
"Wp=(C0-Ca)/(C_p-Ca)\n",
"W_a=(C_p-C0)/(C_p-Ca)\n",
"Wa=(C_Fe3C-C0)/(C_Fe3C-Ca)\n",
"Wae=Wa-W_a\n",
"\n",
"print\"Mass fraction of total ferritic phase is\",round(Wa,2)\n",
"print\"Mass fraction of Fe3C is\",round(W_Fe3C,2)\n",
"print\"Mass fraction of Pearlite is\",round(Wp,2)\n",
"print\"ass fraction of proeutectoid ferrite is\",round(W_a,2)\n",
"print\"Mass fraction of eutectoid ferrite is\",round(Wae,2)\n",
"\n",
"\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Mass fraction of total ferritic phase is 0.95\n",
"Mass fraction of Fe3C is 0.05\n",
"Mass fraction of Pearlite is 0.44\n",
"ass fraction of proeutectoid ferrite is 0.56\n",
"Mass fraction of eutectoid ferrite is 0.4\n"
]
}
],
"prompt_number": 10
},
{
"cell_type": "code",
"collapsed": false,
"input": [],
"language": "python",
"metadata": {},
"outputs": []
}
],
"metadata": {}
}
]
}
|
